Advanced action issue
I'm starting to see AA's as potential minefields, I have an advanced action as follows

When I trigger the AA nothing happens. So I remove the assign action. When I click the trigger again it works as intended the button appears. So I believe the problem lies with the assign action. I am using only 4 user variables in the project as follows.

they seem quite unique so I don't see any naming issues. I have 3 other slides that with similar AA's that work as intended
I had this same issue a few weeks ago and I had to not use certain slides (not a good solution)
I really can't understand why a trigger will do nothing when I try to assign a value to a variable. the consensus the first time on the forum was that it was a naming issue. I'm not seeing it. see below for timeline screenshot for good measure.
