VCE: If Variable players equals variable PlayersAlive(team1), then do?

[Brixmon]

How do I replicate that effect in VCE? Specifically, I'm trying to get a zonebrick which has its own "players within zone" variable, detect when the amount of players inside it equals the amount of players alive on team1(slayer), and then do an event or range of events once that's been met. But I have no idea how to do that.

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[Gen. Hothauser]

When a player enters/leaves the zone, modify a brick variable "PlayersInZone". Every time a player enters the zone, do a check comparing "PlayersInZone" with <var:cl:TeamMembers>.