show and hide layer based on an object's state

Mine is set up exactly the same way as Wendy's: show a layer when the state of all the pictures is visited. However, I do have five pictures rather than the three in her example.

I cannot share the file or slide due to it having company proprietary information. Perhaps the issue is like Walt stated, the trigger is unreliable when dealing with more than four items. I'll see if I can find another workaround and will report back if I do.