Configuring cart rules

[crota]

Hi, sorry for my enaglish I'm italian.

 

I'm trying to configure the cart rules in prestashop 1.5.4.0

 

I need to configure a rule that work as above:

 

Every x products send a gift.

 

I know that I can configure the cart rule as "if in the cart there are al least x product..etcetcetc..."

 

But I need "For every x product...etcetcetc..."

 

For example:

 

in the cart there is 1 of product "P" then send a gift "gift1"

in the cart there is 2 product "P" then send 2 gift "gift1"

 

that means "for every product "P" in the cart..send 1 gift "gift1"

 

 

 

 

 

in the cart there is 2 of product "Y" then send a gift "gift2"

in the cart there is 4 product "Y" then send 2 gift "gift2"

 

that means "for every 2 of product "Y" in the cart..send 1 gift "gift2"

 

 

 

 

 

in the cart there is 3 of product "Z" then send a gift "gift3"

in the cart there is 6 product "Z" then send 2 gift "gift3"

 

that means "for every 3 of product "Z" in the cart..send 1 gift "gift3"

 

 

Can someone help me?

 

 

thanks