Why doesn't my script put players on team based on group?

game.Players.PlayerAdded:Connect(function(player)
	if player:IsInGroup("4692686", "4698727") then
		player.TeamColor = BrickColor.new("Royal purple")
	elseif player:IsInGroup("4692686", "4698507") then
		player.TeamColor = BrickColor.new("Maroon")
	elseif player:IsInGroup("4692686", "4721577") then
		player.TeamColor = BrickColor.new("Black")
	elseif player:IsInGroup("4692686") then
		player.TeamColor = BrickColor.new("Bright red")
	else
		player.TeamColor = BrickColor.new("Bright blue")
	end
end)