Button Triggering problem

Can you see what's wrong in this code - I'm stuck with it.

<img src="https://dl.dropbox.com/u/104684620/Capture.JPG" border="0" />

I'm trying to control a triggerable object with a button. When the button is pressed, then it finds the Triggerable Object with the TargetID and it sets IsTriggered. This works fine.

When the button is let go, then it should do the same - find the Triggerable Object with the TargetID and set IsTriggered to false. But this is not working.

Any ideas?

Well, I've solved it - by checking against the animation frame of the button (is the button down as well). But I still don't see why it doesn't work as written.

(Although it's neater now since previously the event system was spamming away on every button that the player wasn't touching)