Multiplying units.

Well there's a way to multiply the units you got in a stack, I'm not gonna tell how to do it here but I can make a vid of it.

Nvm, when I use them to attack they don't work. It says I have x2 units but can't use them.

EDIT:
I can make the units dissapear though. They turn into a 0 units count, but when I send an unit to that stack, the units reappear.

Could you please record a video and PM it to me ? Cheers.

Sure, 1sec.