Discount On Item In Box

Hello,

I would like to create a promotion when someone buy 1000 items or more.

The problem, I have different boxes (different sku) that doesn't contain the same quantity in each. Ex: one can contain 400 items, the other 200 ...

I would like to have a promotion when someone has 1000 items or more in his cart.

I tried to add a feature and create a condition on this feature, but it doesn't seem to calculate to total of item in the cart like we can do with the total price of the cart.

Is there a way I could do something for it ?

Please pay attention to the "Total items in cart" condition

http://prntscr.com/hfpzit

Please pay attention to the "Total items in cart" condition

http://prntscr.com/hfpzit

I'm not talking about items in the cart but items in a single sku.

Ex: sku1 has 30 items in it and sku 2 has 50 items in it.

I would like to have a promotion if someone buy 80 items.

So if it has in is cart sku1 x 2 it won`t apply the discount but if I have sku1 + sku2 it will be applied.

I am afraid it is not possible without code modification