mon = peripheral.wrap("top")
mon.setTextScale(5)
rednet.open("back")
os.pullEvent()
	event = "rednet_message"
	p1 = senderID
	p2 = message
	p3 = distance
while(true)
do
	local event, p1, p2, p3 = os.pullEvent()
	if event=="rednet_message" then
		if p2 == 51 then
		redstone.setOutput("right", true)
		mon.write("PLAYER ENTERED BUILDING")
		sleep(5)
		mon.clear
		end
	end
end