New "Button pressed" Events - How to get Triggering Player?

[Uncle]

Edit: I'm using this Event for selecting buttons:

• Game - Button for build Barracks pressed.

Anyone know how to get a player response for these Events or am I missing something?

 

[FeelsGoodMan]

Maybe making a custom build menu with a spell book or bear form could work?

 

[Uncle]

Maybe making a custom build menu with a spell book or bear form could work?

Found my error, edited the post.