diff --git a/scripts/install b/scripts/install
index 44d871c..b67e314 100644
--- a/scripts/install
+++ b/scripts/install
@@ -46,7 +46,10 @@ chmod 400 "$install_dir/.env"
 chown $app:$app "$install_dir/.env"
 
 # max file upload size
-MEDIA_UPLOAD_SIZE="${media_upload_size:0:2}000000" # convert the MB argument in bytes
+MEDIA_UPLOAD_SIZE="${media_upload_size//[!0-9]/}000000"
+
+"${media_upload_size:0:2}000000" # convert the MB argument in bytes
+STRING="5MB,10MB"; echo 
 ynh_replace_string --match_string="UPLOAD_LIMIT=MEDIA_UPLOAD_SIZE" --replace_string="UPLOAD_LIMIT=$MEDIA_UPLOAD_SIZE" --target_file="$install_dir/.env"
 
 #=================================================