Import products from folder

Hi,
Im trying to create a gallery for selling photos with the "Import products from folder" option, but i cant. For example, my page is www.****.com and i want that to add a product for each photography from the folder http://www.****.com/wp-includes/images/pru/ , so i choose Type "Images", Delete files automatically "No" and write http://www.****.com/wp-includes/images/pru/ on the folder path and i choose the template of another product (also an image), and when i click on "Import" i have always the same messagge "0 products found : 0 new products imported, 0 invalid product code, 0 already existing products" .
Could someone help me?
Thank you very much

Of course, you need to enter the folder PATH, not the folder URL.
It should be something like that for example:
/home/user/www/myimagefolder/
The images have to be already on your server.

Thank you very much nicolas!!

I tried what you told me and it worked! (i also change the folder permisions to 777)

Regards!