Decrease quantity of product in cart

[window-tint]

Hi

On my shopping cart page, I am trying to allow customers to increase or decrease the quantity of a product in their cart.

I am using the {$product.down_quantity_url} variable which displays something like:

/cart?update=1&id_product=92953&id_product_attribute=38902&op=down&qty=1

But it doesn't decrease the quantity of the product, nothing happens.

Does anyone know what the correct URL is to decrease the quantity of a product?

Thanks

 

 

[Divine]

Hi,

I don't understand ?... this feature is natively included in Prestashop.