Use combinations to sell multiples of products, how to make PrestaShop recognize the quantity inside the multiple

[ballashop]

Hi,

we'd like to sell a multiple of product like a combination, we create an attribute call "Quantity" and put values like:

Single (1 piece)
2 pieces
4 pieces
etc...

In this way we can sell multiples as combinations, but PrestaShop cannot know that the 6 peaces value of the Quantity attribute has 6 units inside.
Therefore it will not be possible to manage the table "starting from ..." as shown in the screenshot, the table is only shown on single because it is the only parameter that can give PrestaShop the correct quantity with the discount.
If I switch to a combination, the table is hidden, which is correct because it is not associated with multiple combinations.

How do you manage the multiple?
Have you ever sold multiple products on the same product page?

Thanks for any reply.

Balla