diff --git a/check_process b/check_process
index d4b6716..50b0639 100644
--- a/check_process
+++ b/check_process
@@ -14,7 +14,6 @@
 		setup_public=0
 		upgrade=1
 		backup_restore=1
-		multi_instance=1
-		incorrect_path=1
+		multi_instance=0
 		port_already_use=0
 		change_url=0
diff --git a/scripts/change_url b/scripts/change_url
index 85b4bea..14b869b 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -12,6 +12,7 @@ source /usr/share/yunohost/helpers
 #=================================================
 # RETRIEVE ARGUMENTS
 #=================================================
+ynh_print_info --message="Retrieve arguments from the manifest"
 
 old_domain=$YNH_APP_OLD_DOMAIN
 old_path=$YNH_APP_OLD_PATH
@@ -22,13 +23,34 @@ new_path=$YNH_APP_NEW_PATH
 app=$YNH_APP_INSTANCE_NAME
 
 #=================================================
-# CHECK THE SYNTAX OF THE PATHS
+# LOAD SETTINGS
 #=================================================
+ynh_print_info --message="Loading installation settings..."
 
-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 $old_path)
+# Needed for helper "ynh_add_nginx_config"
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+
+# Add settings here as needed by your application
+#db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+#db_user=$db_name
+#db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)
+
+#=================================================
+# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+#=================================================
+ynh_print_info --message="Backing up the app before changing its url (may take a while)..."
+
+# Backup the current version of the app
+ynh_backup_before_upgrade
+ynh_clean_setup () {
+	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
+	ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
+
+	# restore it if the upgrade fails
+	ynh_restore_upgradebackup
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
 
 #=================================================
 # CHECK WHICH PARTS SHOULD BE CHANGED
@@ -51,31 +73,30 @@ fi
 #=================================================
 # MODIFY URL IN NGINX CONF
 #=================================================
+ynh_print_info --message="Updating nginx web server configuration..."
 
 nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
 
 # Change the path in the nginx config file
 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"
-  # Replace locations starting with old_path
-  # Look for every location possible patterns (see https://nginx.org/en/docs/http/ngx_http_core_module.html#location)
-  ynh_replace_string "location\( \(=\|~\|~\*\|\^~\)\)\? $old_path" "location\1 $new_path"  "$nginx_conf_path"
-  # Replace path in "return" directives
-  ynh_replace_string "return \([[:digit:]]\{3\}\) $old_path" "return \1 $new_path"  "$nginx_conf_path"
-  # Calculate and store the nginx config file checksum
-  ynh_store_file_checksum "$nginx_conf_path"
+	# Make a backup of the original nginx config file if modified
+	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
+	# Set global variables for nginx helper
+	domain="$old_domain"
+	path_url="$new_path"
+	# Create a dedicated nginx config
+	ynh_add_nginx_config
 fi
 
 # Change the domain for nginx
 if [ $change_domain -eq 1 ]
 then
-  # Delete file checksum for the old conf file location
-  ynh_delete_file_checksum "$nginx_conf_path"
+	# Delete file checksum for the old conf file location
+	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/$app.conf"
+	# Store file checksum for the new config file location
+	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
 fi
 
 #=================================================
@@ -83,6 +104,12 @@ fi
 #=================================================
 # RELOAD NGINX
 #=================================================
+ynh_print_info --message="Reloading nginx web server..."
 
-systemctl reload nginx
+ynh_systemd_action --service_name=nginx --action=reload
 
+#=================================================
+# END OF SCRIPT
+#=================================================
+
+ynh_print_info --message="Change of URL completed for $app"