I've already seen a similar thread about this topic, but the resolution was resolved. What I'm wondering is how I can detect an inverted radius-- as in detecting if anybody is not in a specific radius. For example, detecting if any person is not in a room. I'm trying to create a lighting system, and I can't seem to get the selector right. I'm using 1.12.2 because I never got used to 1.13+ commands.