I haven't done this with an array but when I call functions from compositionready from within a symbol you have to add extra code to the sym part.
Add getComposition().getStage(). So it looks like this
This may not work but it was the same sort of problem I had with a function.
I forgot about arrays, I am using simple vars now. Yes, must add that extra code. Thank you!
One way to avoid variable problems is to write all your code in compositionReady including the click events.