I got hardly any expirience with Requirements. And I fail at creating one like that: A Requirement that allows a Unit only to use a specific Ability, when it's NOT having a specific Buff. I find out how to do it, that it's possible to use the Ability when the Unit HAS the Buff. But that's clearly not what I want. :S
Using Validators worked BUT then there is no red requirement, telling you what's "wrong" - why you can't use the (Ability) ... And I want that! :P
Anyone want's to share their knowledge with me and tell me how to do it?!