Need help with a state/variable

Hi All,

I'm hoping someone can help me figure this out.  I downloaded a free storyline game and am trying to update it for my needs.  The blocks on the pyramid have several states (normal, hover, down, and disabled)  I added disabled because I need to have the blocks turn purple and be disabled only when the answer is correct.  If a user chooses a block incorrectly I need that block to be available for click when it is the correct answer to a later question.  I've tried several different things and I just can't seem to get it to a disabled state only when that block is the correct answer.  Any help would be greatly appreciated.  I'm attaching a screen shot of the variable for a correct answer.