diff --git a/conf/systemd.service b/conf/systemd.service
index 4c9bd16..58d15f0 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -7,7 +7,7 @@ Type=simple
 User=__APP__
 Group=__APP__
 EnvironmentFile=__FINALPATH__/.env
-WorkingDirectory=__FINALPATH__
+WorkingDirectory=__FINALPATH__/
 ExecStart=/bin/sh -c 'node ./dist/bin/server >> /var/log/__APP__/__APP__.log 2>&1'
 
 [Install]
diff --git a/manifest.json b/manifest.json
index e19b3ef..2ab0633 100644
--- a/manifest.json
+++ b/manifest.json
@@ -13,7 +13,7 @@
         "name": "yalh76"
     },
     "requirements": {
-        "yunohost": ">= 3.4"
+        "yunohost": ">= 3.5"
     },
     "multi_instance": true,
     "services": [
diff --git a/scripts/backup b/scripts/backup
index b6d3f96..fd087db 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -8,7 +8,6 @@
 
 #Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
 source ../settings/scripts/_common.sh
-source ../settings/scripts/ynh_systemd_action
 source /usr/share/yunohost/helpers
 
 #=================================================
@@ -24,47 +23,47 @@ ynh_abort_if_errors
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_print_info "Loading installation settings..."
+ynh_print_info --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
-final_path=$(ynh_app_setting_get $app final_path)
-domain=$(ynh_app_setting_get $app domain)
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+domain=$(ynh_app_setting_get --app=$app --key=domain)
 
 #=================================================
 # STANDARD BACKUP STEPS
 #=================================================
 # BACKUP THE APP MAIN DIR
 #=================================================
-ynh_print_info "Backing up the main app directory..."
+ynh_print_info --message="Backing up the main app directory..."
 
-ynh_backup "$final_path"
+ynh_backup --src_path="$final_path"
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
 #=================================================
-ynh_print_info "Backing up nginx web server configuration..."
+ynh_print_info --message="Backing up nginx web server configuration..."
 
-ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # SPECIFIC BACKUP
 #=================================================
 # BACKUP LOGROTATE
 #=================================================
-ynh_print_info "Backing up logrotate configuration..."
+ynh_print_info --message="Backing up logrotate configuration..."
 
-ynh_backup "/etc/logrotate.d/$app"
+ynh_backup --src_path="/etc/logrotate.d/$app"
 
 #=================================================
 # BACKUP SYSTEMD
 #=================================================
-ynh_print_info "Backing up systemd configuration..."
+ynh_print_info --message="Backing up systemd configuration..."
 
-ynh_backup "/etc/systemd/system/$app.service"
+ynh_backup --src_path="/etc/systemd/system/$app.service"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info "Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
+ynh_print_info --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
diff --git a/scripts/change_url b/scripts/change_url
index 12c1cf6..74e8caf 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -24,24 +24,13 @@ app=$YNH_APP_INSTANCE_NAME
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_print_info "Loading installation settings..."
+ynh_print_info --message="Loading installation settings..."
 
 # Needed for helper "ynh_add_nginx_config"
-final_path=$(ynh_app_setting_get $app final_path)
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 # Add settings here as needed by your application
-#db_name=$(ynh_app_setting_get "$app" db_name)
-#db_pwd=$(ynh_app_setting_get $app db_pwd)
-port=$(ynh_app_setting_get $app port)
-
-#=================================================
-# CHECK THE SYNTAX OF THE PATHS
-#=================================================
-
-test -n "$old_path" || old_path="/"
-test -n "$new_path" || new_path="/"
-new_path=$(ynh_normalize_url_path $new_path)
-old_path=$(ynh_normalize_url_path $old_path)
+port=$(ynh_app_setting_get --app=$app --key=port)
 
 #=================================================
 # CHECK WHICH PARTS SHOULD BE CHANGED
@@ -64,7 +53,7 @@ fi
 #=================================================
 # MODIFY URL IN NGINX CONF
 #=================================================
-ynh_print_info "Updating nginx web server configuration..."
+ynh_print_info --message="Updating nginx web server configuration..."
 
 nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
 
@@ -72,7 +61,7 @@ nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
 if [ $change_path -eq 1 ]
 then
 	# Make a backup of the original nginx config file if modified
-	ynh_backup_if_checksum_is_different "$nginx_conf_path"
+	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
 	# Set global variables for nginx helper
 	domain="$old_domain"
 	path_url="$new_path"
@@ -84,10 +73,10 @@ fi
 if [ $change_domain -eq 1 ]
 then
 	# Delete file checksum for the old conf file location
-	ynh_delete_file_checksum "$nginx_conf_path"
+	ynh_delete_file_checksum --file="$nginx_conf_path"
 	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
 	# Store file checksum for the new config file location
-	ynh_store_file_checksum "/etc/nginx/conf.d/$new_domain.d/$app.conf"
+	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
 fi
 
 #=================================================
@@ -111,11 +100,11 @@ else
     new_domain_uri="$new_domain$new_path"
 fi
 
-ynh_replace_string "EXTERNAL_URL=.*" "EXTERNAL_URL=https://$new_domain_uri/" "$final_path/.env"
+ynh_replace_string --match_string="EXTERNAL_URL=.*" --replace_string="EXTERNAL_URL=https://$new_domain_uri/" --target_file="$final_path/.env"
 
-ynh_backup_if_checksum_is_different "$final_path/.env"
+ynh_backup_if_checksum_is_different --file="$final_path/.env"
 # Recalculate and store the checksum of the file for the next upgrade.
-ynh_store_file_checksum "$final_path/.env"
+ynh_store_file_checksum --file="$final_path/.env"
 
 #=================================================
 # START SERVICE
@@ -129,7 +118,7 @@ sleep 10
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_print_info "Reloading nginx web server..."
+ynh_print_info --message="Reloading nginx web server..."
 
 systemctl reload nginx
 
@@ -137,4 +126,4 @@ systemctl reload nginx
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info "Change of URL completed for $app"
+ynh_print_info --message="Change of URL completed for $app"
diff --git a/scripts/install b/scripts/install
index 73ed0b2..99333d9 100644
--- a/scripts/install
+++ b/scripts/install
@@ -32,38 +32,38 @@ app=$YNH_APP_INSTANCE_NAME
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
-ynh_print_info "Validating installation parameters..."
+ynh_print_info --message="Validating installation parameters..."
 
 final_path=/var/www/$app
-test ! -e "$final_path" || ynh_die "This path already contains a folder"
+test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
 
 # Register (book) web path
-ynh_webpath_register $app $domain $path_url
+ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
-ynh_print_info "Storing installation settings..."
+ynh_print_info --message="Storing installation settings..."
 
-ynh_app_setting_set $app domain $domain
-ynh_app_setting_set $app path $path_url
-ynh_app_setting_set $app is_public $is_public
+ynh_app_setting_set --app=$app --key=domain --value=$domain
+ynh_app_setting_set --app=$app --key=path --value=$path_url
+ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
 # FIND AND OPEN A PORT
 #=================================================
-ynh_print_info "Configuring firewall ..."
+ynh_print_info --message="Configuring firewall ..."
 
 # Find a free port
 port=$(ynh_find_port 8095)
-ynh_app_setting_set $app port $port
+ynh_app_setting_set --app=$app --key=port --value=$port
 
 #=================================================
 # INSTALL DEPENDENCIES
 #=================================================
-ynh_print_info "Installing dependencies ..."
+ynh_print_info --message="Installing dependencies ..."
 
 ynh_install_app_dependencies $pkg_dependencies
 ynh_install_nodejs 10
@@ -71,16 +71,16 @@ ynh_install_nodejs 10
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_print_info "Setting up source files ..."
+ynh_print_info --message="Setting up source files ..."
 
-ynh_app_setting_set $app final_path $final_path
+ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 # Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source "$final_path"
+ynh_setup_source --dest_dir="$final_path"
 
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_print_info "Configuring nginx web server..."
+ynh_print_info --message="Configuring nginx web server..."
 
 # Create a dedicated nginx config
 ynh_add_nginx_config
@@ -88,7 +88,7 @@ ynh_add_nginx_config
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
-ynh_print_info "Configuring system user ..."
+ynh_print_info --message="Configuring system user ..."
 
 # Create a system user
 ynh_system_user_create "$app" "$final_path"
@@ -130,7 +130,7 @@ popd
 #=================================================
 # SETUP SYSTEMD
 #=================================================
-ynh_print_info "Configuring a systemd service ..."
+ynh_print_info --message="Configuring a systemd service ..."
 
 # Create a dedicated systemd config
 ynh_add_systemd_config
@@ -148,17 +148,17 @@ else
     domain_uri="$domain$path_url"
 fi
 
-ynh_replace_string "__NODEJS_PATH__" "$nodejs_path" "$final_path/.env"
-ynh_replace_string "__PORT__" "$port" "$final_path/.env"
-ynh_replace_string "__DOMAIN_URI__" "$domain_uri" "$final_path/.env"
-ynh_replace_string "__FINALPATH__" "$final_path" "$final_path/.env"
+ynh_replace_string --match_string="__NODEJS_PATH__" --replace_string="$nodejs_path" --target_file="$final_path/.env"
+ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$final_path/.env"
+ynh_replace_string --match_string="__DOMAIN_URI__" --replace_string="$domain_uri" --target_file="$final_path/.env"
+ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path" --target_file="$final_path/.env"
 
 #=================================================
 # STORE THE CONFIG FILE CHECKSUM
 #=================================================
 
 # Calculate and store the config file checksum into the app settings
-ynh_store_file_checksum "$final_path/.env"
+ynh_store_file_checksum --file="$final_path/.env"
 
 #=================================================
 # GENERIC FINALIZATION
@@ -172,7 +172,7 @@ chown -R "$app":"$app" "$final_path"
 #=================================================
 # SETUP LOGROTATE
 #=================================================
-ynh_print_info "Configuring log rotation ..."
+ynh_print_info --message="Configuring log rotation ..."
 
 # Use logrotate to manage application logfile(s)
 ynh_use_logrotate
@@ -188,19 +188,19 @@ yunohost service add $app --description "$app daemon for distbin" --log "/var/lo
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_print_info "Configuring SSOwat ..."
+ynh_print_info --message="Configuring SSOwat ..."
 
 # Make app public if necessary
 if [ $is_public -eq 1 ]
 then
 	# unprotected_uris allows SSO credentials to be passed anyway.
-	ynh_app_setting_set $app unprotected_uris "/"
+	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
 fi
 
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_print_info "Reloading nginx web server..."
+ynh_print_info --message="Reloading nginx web server..."
 
 systemctl reload nginx
 
@@ -215,4 +215,4 @@ sleep 10
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info "Installation of $app completed"
+ynh_print_info --message="Installation of $app completed"
diff --git a/scripts/remove b/scripts/remove
index 2352e91..a797fe9 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -12,13 +12,13 @@ source /usr/share/yunohost/helpers
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_print_info "Loading installation settings..."
+ynh_print_info --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
-domain=$(ynh_app_setting_get $app domain)
-port=$(ynh_app_setting_get $app port)
-final_path=$(ynh_app_setting_get $app final_path)
+domain=$(ynh_app_setting_get --app=$app --key=domain)
+port=$(ynh_app_setting_get --app=$app --key=port)
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 #=================================================
 # STANDARD REMOVE
@@ -29,14 +29,14 @@ final_path=$(ynh_app_setting_get $app final_path)
 # Remove a service from the admin panel, added by `yunohost service add`
 if yunohost service status $app >/dev/null 2>&1
 then
-	ynh_print_info "Removing $app service"
+	ynh_print_info --message="Removing $app service"
 	yunohost service remove $app
 fi
 
 #=================================================
 # STOP AND REMOVE SERVICE
 #=================================================
-ynh_print_info "Stopping and removing the systemd service"
+ynh_print_info --message="Stopping and removing the systemd service"
 
 # Remove the dedicated systemd config
 ynh_remove_systemd_config
@@ -44,7 +44,7 @@ ynh_remove_systemd_config
 #=================================================
 # REMOVE DEPENDENCIES
 #=================================================
-ynh_print_info "Removing dependencies"
+ynh_print_info --message="Removing dependencies"
 
 # Remove metapackage and its dependencies
 ynh_remove_app_dependencies
@@ -53,15 +53,15 @@ ynh_remove_nodejs
 #=================================================
 # REMOVE APP MAIN DIR
 #=================================================
-ynh_print_info "Removing app main directory"
+ynh_print_info --message="Removing app main directory"
 
 # Remove the app directory securely
-ynh_secure_remove "$final_path"
+ynh_secure_remove --file="$final_path"
 
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
-ynh_print_info "Removing nginx web server configuration"
+ynh_print_info --message="Removing nginx web server configuration"
 
 # Remove the dedicated nginx config
 ynh_remove_nginx_config
@@ -69,7 +69,7 @@ ynh_remove_nginx_config
 #=================================================
 # REMOVE LOGROTATE CONFIGURATION
 #=================================================
-ynh_print_info "Removing logrotate configuration"
+ynh_print_info --message="Removing logrotate configuration"
 
 # Remove the app-specific logrotate config
 ynh_remove_logrotate
@@ -77,35 +77,35 @@ ynh_remove_logrotate
 #=================================================
 # CLOSE A PORT
 #=================================================
-ynh_print_info "Close ports"
+ynh_print_info --message="Closing a port..."
 
 if yunohost firewall list | grep -q "\- $port$"
 then
-	ynh_print_info "Closing port $port"
+	ynh_print_info --message="Closing port $port"
 	ynh_exec_warn_less yunohost firewall disallow TCP $port
 fi
 
 #=================================================
 # SPECIFIC REMOVE
 #=================================================
-# REMOVE THE CRON FILE
+# REMOVE FILE
 #=================================================
 
 # Remove the log files
-ynh_secure_remove "/var/log/$app/"
+ynh_secure_remove --file="/var/log/$app/"
 
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
 # REMOVE DEDICATED USER
 #=================================================
-ynh_print_info "Removing the dedicated system user"
+ynh_print_info --message="Removing the dedicated system user"
 
 # Delete a system user
-ynh_system_user_delete $app
+ynh_system_user_delete --username=$app
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info "Removal of $app completed"
+ynh_print_info --message="Removal of $app completed"
diff --git a/scripts/restore b/scripts/restore
index 374982d..e745f06 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -24,23 +24,23 @@ ynh_abort_if_errors
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_print_info "Loading settings..."
+ynh_print_info --message="Loading settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
-domain=$(ynh_app_setting_get $app domain)
-path_url=$(ynh_app_setting_get $app path)
-final_path=$(ynh_app_setting_get $app final_path)
+domain=$(ynh_app_setting_get --app=$app --key=domain)
+path_url=$(ynh_app_setting_get --app=$app --key=path)
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
 #=================================================
-ynh_print_info "Validating restoration parameters..."
+ynh_print_info --message="Validating restoration parameters..."
 
-ynh_webpath_available $domain $path_url \
-	|| ynh_die "Path not available: ${domain}${path_url}"
+ynh_webpath_available --domain=$domain --path_url=$path_url \
+	|| ynh_die --message="Path not available: ${domain}${path_url}"
 test ! -d $final_path \
-	|| ynh_die "There is already a directory: $final_path "
+	|| ynh_die --message="There is already a directory: $final_path "
 
 #=================================================
 # STANDARD RESTORATION STEPS
@@ -48,22 +48,22 @@ test ! -d $final_path \
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
 
-ynh_restore_file "/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
-ynh_print_info "Restoring the app main directory..."
+ynh_print_info --message="Restoring the app main directory..."
 
-ynh_restore_file "$final_path"
+ynh_restore_file --origin_path="$final_path"
 
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================
-ynh_print_info "Recreating the dedicated system user..."
+ynh_print_info --message="Recreating the dedicated system user..."
 
 # Create the dedicated user (if not existing)
-ynh_system_user_create "$app" "$final_path"
+ynh_system_user_create --username=$app --home_dir=$final_path
 
 #=================================================
 # RESTORE USER RIGHTS
@@ -84,7 +84,7 @@ chown -R "$app":"$app" "/var/log/$app"
 #=================================================
 # REINSTALL DEPENDENCIES
 #=================================================
-ynh_print_info "Reinstalling dependencies..."
+ynh_print_info --message="Reinstalling dependencies..."
 
 # Define and install dependencies
 ynh_install_app_dependencies $pkg_dependencies
@@ -93,9 +93,9 @@ ynh_install_nodejs 10
 #=================================================
 # RESTORE SYSTEMD
 #=================================================
-ynh_print_info "Restoring the systemd configuration..."
+ynh_print_info --message="Restoring the systemd configuration..."
 
-ynh_restore_file "/etc/systemd/system/$app.service"
+ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
 systemctl enable $app.service
 systemctl daemon-reload
 
@@ -105,24 +105,18 @@ systemctl daemon-reload
 
 yunohost service add $app --log "/var/log/$app/$app.log"
 
-#=================================================
-# RESTORE THE CRON FILE
-#=================================================
-
-#ynh_restore_file "/etc/cron.d/$app"
-
 #=================================================
 # RESTORE THE LOGROTATE CONFIGURATION
 #=================================================
 
-ynh_restore_file "/etc/logrotate.d/$app"
+ynh_restore_file --origin_path="/etc/logrotate.d/$app"
 
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
 # RELOAD NGINX AND PHP-FPM
 #=================================================
-ynh_print_info "Reloading nginx web server..."
+ynh_print_info --message="Reloading nginx web server..."
 
 systemctl reload nginx
 
@@ -144,4 +138,4 @@ sleep 10
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info "Restoration completed for $app"
+ynh_print_info --message="Restoration completed for $app"
diff --git a/scripts/upgrade b/scripts/upgrade
index 78ca538..5c9d7fa 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -12,40 +12,40 @@ source /usr/share/yunohost/helpers
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_print_info "Loading installation settings..."
+ynh_print_info --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
-domain=$(ynh_app_setting_get $app domain)
-path_url=$(ynh_app_setting_get $app path)
-is_public=$(ynh_app_setting_get $app is_public)
-final_path=$(ynh_app_setting_get $app final_path)
-port=$(ynh_app_setting_get $app port)
+domain=$(ynh_app_setting_get --app=$app --key=domain)
+path_url=$(ynh_app_setting_get --app=$app --key=path)
+is_public=$(ynh_app_setting_get --app=$app --key=is_public)
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+port=$(ynh_app_setting_get --app=$app --key=port)
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_print_info "Ensuring downward compatibility..."
+ynh_print_info --message="Ensuring downward compatibility..."
 
 # Fix is_public as a boolean value
 if [ "$is_public" = "Yes" ]; then
-	ynh_app_setting_set $app is_public 1
+	ynh_app_setting_set --app=$app --key=is_public --value=1
 	is_public=1
 elif [ "$is_public" = "No" ]; then
-	ynh_app_setting_set $app is_public 0
+	ynh_app_setting_set --app=$app --key=is_public --value=0
 	is_public=0
 fi
 
 # If final_path doesn't exist, create it
 if [ -z $final_path ]; then
 	final_path=/var/www/$app
-	ynh_app_setting_set $app final_path $final_path
+	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================
-ynh_print_info "Backing up the app before upgrading (may take a while)..."
+ynh_print_info --message="Backing up the app before upgrading (may take a while)..."
 
 # Backup the current version of the app
 ynh_backup_before_upgrade
@@ -57,13 +57,6 @@ ynh_clean_setup () {
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-#=================================================
-# CHECK THE PATH
-#=================================================
-
-# Normalize the URL path syntax
-path_url=$(ynh_normalize_url_path $path_url)
-
 #=================================================
 # STOP SERVICE
 #=================================================
@@ -75,15 +68,15 @@ ynh_systemd_action --action=stop --service_name=$app
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_print_info "Upgrading source files..."
+ynh_print_info --message="Upgrading source files..."
 
 # Download, check integrity, uncompress and patch the source from app.src#
-ynh_setup_source "$final_path"
+ynh_setup_source --dest_dir="$final_path"
 
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_print_info "Upgrading nginx web server configuration..."
+ynh_print_info --message="Upgrading nginx web server configuration..."
 
 # Create a dedicated nginx config
 ynh_add_nginx_config
@@ -91,7 +84,7 @@ ynh_add_nginx_config
 #=================================================
 # UPGRADE DEPENDENCIES
 #=================================================
-ynh_print_info "Upgrading dependencies..."
+ynh_print_info --message="Upgrading dependencies..."
 
 ynh_install_app_dependencies $pkg_dependencies
 ynh_remove_nodejs
@@ -100,10 +93,10 @@ ynh_install_nodejs 10
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
-ynh_print_info "Making sure dedicated system user exists..."
+ynh_print_info --message="Making sure dedicated system user exists..."
 
 # Create a dedicated user (if not existing)
-ynh_system_user_create "$app" "$final_path"
+ynh_system_user_create --username=$app --home_dir=$final_path
 
 #=================================================
 # SPECIFIC UPGRADE
@@ -146,19 +139,19 @@ else
     domain_uri="$domain$path_url"
 fi
 
-ynh_replace_string "__NODEJS_PATH__" "$nodejs_path" "$final_path/.env"
-ynh_replace_string "__PORT__" "$port" "$final_path/.env"
-ynh_replace_string "__DOMAIN_URI__" "$domain_uri" "$final_path/.env"
-ynh_replace_string "__FINALPATH__" "$final_path" "$final_path/.env"
+ynh_replace_string --match_string="__NODEJS_PATH__" --replace_string="$nodejs_path" --target_file="$final_path/.env"
+ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$final_path/.env"
+ynh_replace_string --match_string="__DOMAIN_URI__" --replace_string="$domain_uri" --target_file="$final_path/.env"
+ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path" --target_file="$final_path/.env"
 
-ynh_backup_if_checksum_is_different "$final_path/.env"
+ynh_backup_if_checksum_is_different --file="$final_path/.env"
 # Recalculate and store the checksum of the file for the next upgrade.
-ynh_store_file_checksum "$final_path/.env"
+ynh_store_file_checksum --file="$final_path/.env"
 
 #=================================================
 # SETUP LOGROTATE
 #=================================================
-ynh_print_info "Upgrading logrotate configuration..."
+ynh_print_info --message="Upgrading logrotate configuration..."
 
 # Use logrotate to manage app-specific logfile(s)
 ynh_use_logrotate --non-append
@@ -166,7 +159,7 @@ ynh_use_logrotate --non-append
 #=================================================
 # SETUP SYSTEMD
 #=================================================
-ynh_print_info "Upgrading systemd configuration..."
+ynh_print_info --message="Upgrading systemd configuration..."
 
 # Create a dedicated systemd config
 ynh_add_systemd_config
@@ -190,19 +183,19 @@ chown -R "$app":"$app" "/var/log/$app"
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_print_info "Upgrading SSOwat configuration..."
+ynh_print_info --message="Upgrading SSOwat configuration..."
 
 # Make app public if necessary
 if [ $is_public -eq 1 ]
 then
 	# unprotected_uris allows SSO credentials to be passed anyway
-	ynh_app_setting_set $app unprotected_uris "/"
+	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
 fi
 
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_print_info "Reloading nginx web server..."
+ynh_print_info --message="Reloading nginx web server..."
 
 systemctl reload nginx
 
@@ -217,4 +210,4 @@ sleep 10
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info "Upgrade of $app completed"
+ynh_print_info --message="Upgrade of $app completed"