Hypno's Better Level Emitter FTB Unleashed E17

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-- Hypno's Better Level Emitter                         --
--                                                      --
-- Hypno FTB Unleashed Episode 17                       --
-- https://www.youtube.com/watch?v=FVdn09e_2R0          --
--                                                      --
-- YouTube Channel http://youtube.com/hypnotizd         --
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local p = peripheral.wrap("bottom")
while true do
  local bones = p.listAll()[352]
  if (redstone.getOutput("top") == true) then
    if (bones < 1000) then
      redstone.setOutput("top", false)
    end
  elseif (redstone.getOutput("top") == false) then
    if (bones > 2000) then
      redstone.setOutput("top", true)
    end
  end
  os.sleep(60)
end