Minecraft - Wireless client

local modem = peripheral.wrap("left")
local mon = peripheral.wrap("back")
modem.open(1) --channel

while true do
local event, modemSide, senderChannel,
  replyChannel, message, senderDistance = os.pullEvent("modem_message")
 mon.clear()
 mon.setCursorPos(1,1)
 mon.write("UU: " ..message)
end