RedStone Signal Toggle

function left ()
    redstone.setOutput("left", (not redstone.getOutput("left")))
    end
function right ()
    redstone.setOutput("right", (not redstone.getOutput("right")))
    end
function up ()
    redstone.setOutput("top", (not redstone.getOutput("up")))
    end
function down ()
    redstone.setOutput("bottom", (not redstone.getOutput("down")))
    end
function front ()
    redstone.setOutput("front", (not redstone.getOutput("front")))
    end
function back ()
    redstone.setOutput("back", (not redstone.getOutput("back")))
    end

arg = {...}
arg[1]=arg[1]+0
if (arg[1]==4) then
    left()
    end
if (arg[1]==2) then
    right()
    end
if (arg[1]==5) then
    up()
    end
if (arg[1]==6) then
    down()
    end
if (arg[1]==1) then
    front()
end
if (arg[1]==3) then
    back()
end