Custom Command Turtles (Farmer)

-- Farmmer

local unloaded = 0
local collected = 0
sleep(1)
rednet.open("right")
while true do
 term.clear()
 term.setCursorPos(1, 1)
 print("Ready to Receve Commands")
 local id, mgs, dis = rednet.receive()
 if mgs == "4Forward" then
  turtle.forward()
 end
 if mgs == "4Back" then
  turtle.back()
 end
 if mgs == "4TurnLeft" then
  turtle.turnLeft()
 end
 if mgs == "4TurnRight" then
  turtle.turnRight()
 end
 if mgs == "4Up" then
  turtle.up()
 end
 if mgs == "4Down" then
  turtle.down()
 end
 if mgs == "4Dig" then
  turtle.dig()
 end
 if mgs == "4DigDown" then
  turtle.digDown()
 end
 if mgs == "4Place" then
  turtle.place()
 end
 if mgs == "4PlaceDown" then
  turtle.placeDown()
 end
 if mgs == "4Drop" then
  for n=1,16 do
   unloaded = unloaded + turtle.getItemCount(n)
   turtle.select(n)
   turtle.drop()
  end
  collected = 0
  turtle.select(1)
 end
end