Block Lift MINE TURTLE

rednet.open("right")
place = "down"
dist = 40

while true do
    id, msg = rednet.receive()
    if msg == "togglelift" then

        if place == "down" then
            for a = 1, dist, 1 do
                turtle.place()
                turtle.up()
                turtle.up()
                turtle.up()
                turtle.up()
            end
        else
            for a = 1, dist, 1 do
                turtle.down()
                turtle.down()
                turtle.down()
                turtle.down()
                turtle.dig()
            end
        end

        if place == "down" then
            place = "up"
        else
            place = "down"
        end
    end

end