Help: Button Device / Tycoon. I can't add any Event bindings to the Button Device UEFN

Hi everyone,

I’m trying to make my first Tycoon Button. I’m supposed to use the User Options - Events button, however there is no “+” button for me. I’ve tried many many things but I can’t get it to work.

Any ideas why i’m not able to Link this Button (also tried Tigger) Device to the Prop Device?
Much Appreciated,

Onyx