Catalog price rules - manufactures

[teo_g]

Hello,

I created a rule that if a customer buys 2 products from a specific manufacturer, the customer receives a certain discount. The problem is that oblige the customer site to buy the same product in quantity 2 pieces from that producer. Correct me as such a condition, the customer can purchase 2 pieces of the same product from that producer or 2 different products from that producer.
How can I resolve this situation?

Thank you.

[teo_g]

This problem is for prestashop developer. Please resolve this.

Thank you!