bf,bfnx=false,false
rs.setOutput("bottom",true)
rednet.open("top")
while true do
  senderId, message, protocol = rednet.receive()
  if message=="blaze_farm: on;" then
    bf=true
  elseif message=="blaze_farm: off;" then
    bf=false
  elseif message=="blaze_farm_no_xp: on;" then
    bfnx=true
  elseif message=="blaze_farm_no_xp: off;" then
    bfnx=false
  end
  if bf or bfnx then
    rs.setOutput("bottom",false)
  else
    rs.setOutput("bottom",true)
  end
end