Pulsing animation not stopping even when trigger tells it to?

Situation:

Have buttons on a slide

Pressing each button opens up a layer

I want each button to periodically pulse (to prompt user to press them) UNLESS that button has already been pressed and the relevant layer viewed

I got the pulses to periodically repeat by using timeline cues, and a cue for the timeline to skip back to a previous cue point when the last cue point is reached.

Each button has a TRUE/FALSE variable associated with it.

The variable is initially set to FALSE, and there is a trigger at each timeline cuepoint telling the button to pulse as long as the variable is FALSE

When the button is pressed, it's layer opens, and there is a trigger to set the associated variable to TRUE

The idea being that when we go back to the base layer, that particular button should stop pulsing - because as I said above, the trigger tells it to only pulse if the variable if FALSE.

I can confirm that the variable changes value when the layer is visited, however, I find the button still pulses when we return to the base layer.

I hope that makes sense. Anyone any idea what I'm missing?

I have done up a dummy slide representing the scenario.