bla

rednet.open("bottom")

product = ""

bim = false

while 1 do
local senderId, message, prot = rednet.receive("1")
  if message == product .. "Essenceoff" then
  redstone.setOutput("back", true)
  redstone.setOutput("top", true)
    print("true")
  elseif message == product .. "Essenceon" then
    redstone.setOutput("back", false)
    redstone.setOutput("top", fale)
    print("false")
        end
    end