TFS 0.X TFS 0.3.7 EDIT Bridge Lever Actions

[OTcreator]

Hello.
I have script, when I pull lever my ground change to stairs. But when I re-pull not back to ground ID.
How change this?

local te = {x = 1113, y = 548, z = 7} -- Position of the stone.
function onUse(cid, item, fromPosition, itemEx, toPosition)
    local ste = getTileItemById(te, 804) -- STONE ID
    if ste.uid > 0 then
        doTransformItem(ste.uid, 8560, 1) -- LADDER ID
    end
    return doTransformItem(item.uid, item.itemid == 1945 and 1946 or 1945)
end