Openerp Prestashop Integration

[ricardo_opencloud]

Hi, i am trying to integrate prestashop to openerp, an opensource software.

 

I am exporting products from my erp to prestashop sucsessfully with images, but when i click to make the image as cover it doesent change to green (True). So when i try to see the product on frontoffice i cant, only if i upload a photo directly with prestashop backoffice.

 

Why do you think i cant change the field cover to true for the images that i export from my software?

 

Thanks in advance