I've been trying to reverse engineer the eventing for a HP bar I made (credit goes to Kiyoshi for the source eventing data), so I could make an EXP bar. However, the exp bar is not working as I suspected it would. It's supposed to be initially empty and fill up as the player gains EXP. It appears it keeps doing the formula each time the player pauses, unpauses, and then pauses again. So, the exp bar keeps getting smaller each time the screen is updated via pausing.

Is there anyway to tell it to only update the EXP display ONCE, unless the EXP value has changed?

Capx link

Took a quick look at the .capx but didn't see the specific events for the exp bar.
What event # are involved in the exp bar, and the pause. That may help me find what's going on.

one way you could do the effect (empty exp bar grows as player gains exp, then level up if needed) is the example file below.
EXPBAR.CAPX example file.

I've set up the example as a group that gets activated only when needed. You don't have to do it that way. it would work as an each tick event just fine. But it sounded like you wanted it to only fire off when updated.