Maximum Quantity

Hi, I was looking for a pricing rule to apply a discount whenever a user adds to his cart 8 exactly units of a specific category.

Therefore I set up a pricing rule constrained by the category, a minimum quantity (8) and a maximum quantity (8). The rule works ok when I add 8 products of this category but it also applies the discount for orders above 8 units. Shouldn′t the maximmum quantity avoid this situation? You can have a look to my configuration: https://prnt.sc/swcv4d

Thanks in advance,