LVL door disappear

[zerghel]

Once again
Sorry for my Noob post

i have this problem with lvl doors
the thing is
lvl door seems to work ok, a player click the door an the door opens and forces the player to move 1sqm to the door, the player walks over the door and the door closes, but if the player click on the door while he is standing on it, the door disappears

i have the doors.lua that comes with Crying Damson
this is my script

local function checkStackpos(item, position)
	position.stackpos = STACKPOS_TOP_MOVEABLE_ITEM_OR_CREATURE
	local thing = getThingfromPos(position)
	position.stackpos = STACKPOS_TOP_FIELD
	local field = getThingfromPos(position)
	if(item.uid ~= thing.uid and thing.itemid >= 100 or field.itemid ~= 0) then
		return FALSE
	end

	return TRUE
end

function onUse(cid, item, fromPosition, itemEx, toPosition)
	if(getItemLevelDoor(item.itemid) > 0) then
		if(item.actionid > 0 and getPlayerLevel(cid) >= (item.actionid - getItemLevelDoor(item.itemid))) then
			doTransformItem(item.uid, item.itemid + 1)
			doTeleportThing(cid, toPosition, TRUE)
		else
			doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, "Only the worthy may pass.")
		end

		return TRUE
	end

	if(isInArray(specialDoors, item.itemid) == TRUE) then
		if(item.actionid ~= 0 and getPlayerStorageValue(cid, item.actionid) ~= -1) then
			doTransformItem(item.uid, item.itemid + 1)
			doTeleportThing(cid, toPosition, TRUE)
		else
			doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, "The door seems to be sealed against unwanted intruders.")
		end

		return TRUE
	end

	if(isInArray(keys, item.itemid) == TRUE) then
		if(itemEx.actionid > 0) then
			if(item.actionid == itemEx.actionid) then
				if doors[itemEx.itemid] ~= nil then
					doTransformItem(itemEx.uid, doors[itemEx.itemid])
					return TRUE
				end
			end

			doPlayerSendCancel(cid, "The key does not match.")
			return TRUE
		end

		return FALSE
	end

	if(isInArray(horizontalOpenDoors, item.itemid) == TRUE and checkStackpos(item, fromPosition) == TRUE) then
		local newPosition = toPosition
		newPosition.y = newPosition.y + 1
		local doorPosition = fromPosition
		doorPosition.stackpos = STACKPOS_TOP_MOVEABLE_ITEM_OR_CREATURE
		local doorCreature = getThingfromPos(doorPosition)
		if(doorCreature.itemid ~= 0) then
			if(getTilePzInfo(doorPosition) == TRUE and getTilePzInfo(newPosition) == FALSE and doorCreature.uid ~= cid) then
				doPlayerSendDefaultCancel(cid, RETURNVALUE_NOTPOSSIBLE)
			else
				doTeleportThing(doorCreature.uid, newPosition, TRUE)
				if(isInArray(closingDoors, item.itemid) ~= TRUE) then
					doTransformItem(item.uid, item.itemid - 1)
				end
			end

			return TRUE
		end

		doTransformItem(item.uid, item.itemid - 1)
		return TRUE
	end

	if(isInArray(verticalOpenDoors, item.itemid) == TRUE and checkStackpos(item, fromPosition) == TRUE) then
		local newPosition = toPosition
		newPosition.x = newPosition.x + 1
		local doorPosition = fromPosition
		doorPosition.stackpos = STACKPOS_TOP_MOVEABLE_ITEM_OR_CREATURE
		local doorCreature = getThingfromPos(doorPosition)
		if(doorCreature.itemid ~= 0) then
			if(getTilePzInfo(doorPosition) == TRUE and getTilePzInfo(newPosition) == FALSE and doorCreature.uid ~= cid) then
				doPlayerSendDefaultCancel(cid, RETURNVALUE_NOTPOSSIBLE)
			else
				doTeleportThing(doorCreature.uid, newPosition, TRUE)
				if(isInArray(closingDoors, item.itemid) ~= TRUE) then
					doTransformItem(item.uid, item.itemid - 1)
				end
			end

			return TRUE
		end

		doTransformItem(item.uid, item.itemid - 1)
		return TRUE
	end

	if(doors[item.itemid] ~= nil and checkStackpos(item, fromPosition) == TRUE) then
		if(item.actionid == 0) then
			doTransformItem(item.uid, doors[item.itemid])
		else
			doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, "It is locked.")
		end

		return TRUE
	end

	return FALSE
end

Any Help Is Fully Appreciated

Sorry for my "Supposed" English