Hi,
You need to make your property public, that's the key to expose it inside the "Get Property" action.
also, I would actually recommand you fire a playmaker global event from your scripts when you detect a change of that visibility, it's better imo.
PlayMakerFSM.BroadcastEvent("my event");
you need to declare the use of playmaker at the top of your script as well
using HutongGames.PlayMaker;
Bye,
Jean