Communication between Metasounds?

Is there a way for Metasounds to communicate?

I have a Metasound Source for the Level and using PCG some Actors with their own Metasounds which have an Attenuation Radius for each, when I’m within range and they begin to play I want to notify the Level’s Metasound for it not to play anything until I’m back out of range.

What’s the simplest way to do this?