How Can I Limit My "selection" To One Object?

Hey There,

New to buildbox and am still figuring a bunch out.
I have cubes that when touched turn red to indicate they have been "selected", using the switch node when they are touched again they return to normal, and have been "deselected".

Is there a way I can limit the player from selecting more than one at a time? open to all suggestions

Thanks in advance,

 

Or rather if the player clicks another block the previous block returns to normal/resets?

 

Nevermind everyone, i managed to figure out a work around