More restricted voucher product rules

[Manuls]

Hi!

 

I want to do something with the producto roles to apply a voucer but I dont really know if it is possible to do. I will explain myself:

 

I have to apply 2 different vouchers in 2 moments:

 

1.- When the costumer only buys products from the category A

2.- When the costumer buys products from the category A and productos from another category no matter what

 

Where is the problem? I tried to use the product rules in the voucher section but I am not able of being so restrictive because the voucher from moment 2 always applies when someone orders a producto from category A. 

 

I tried a lot of combination but the rules are always in positive mode (I cannot say "when there are no products from this category or something) so I dont know if there is something I can do to make this work.

 

I use Prestashop 1.5.4.1

 

Thanks!