CC re wireless turtle

re=peripheral.wrap("left")
rednet.open("right")
while true do
e,modemSide,channel,id,modemMessage =os.pullEvent("modem_message")

if string.sub(modemMessage,1,#"setFreq ")=="setFreq " then
id=tonumber(string.sub(modemMessage,string.find(modemMessage," ")+1))
re.setFreq(id)
re.set(true)
end

if string.sub(modemMessage,1,#"unsetFreq ")=="unsetFreq " then
id=tonumber(string.sub(modemMessage,string.find(modemMessage," ")+1))
re.setFreq(id)
re.set(false)
end

sleep(1)
end