an alternative is event dispatcher.
make an actor manager or even just use the player as the manager.
create an event dispatcher in player blueprint called “on show/hide” .
and then have the static mesh actors to get player at their begin play.
drag a line out from the player search for the dispatcher you just created in the player.bind an event to it.
player then can call the dispatcher with a button press or anything.
The actors will auto respond to the player