Pillar Puzzle Trap always/never activating

[antstubell]

Hi all.

I've set up a pillar puzzle and it works perfectly but I wanted to add a trap for fails. I added the fire trap in the lever's properties and made the activate parent the Xmarker which is also the activate parent for the trap door. It didn't fire the fire trap when the puzzle was correct or wrong. I made the lever the parent and now it fires whenever the lever is pulled. How can I make it only fire when the puzzle is incorrect and the lever pulled i.e. a fail?

Hope the screenshot helps.