Lua Windows.lua (Tile not found)

[subyth]

I Using OtX 2.6 (tfs 0.3.7) 8.60

When I use a window that does not have Tile underneath it (usually when it is on the first floor of a tower for example.

NOTE: this error does not accuse if they are windows of HOUSES.

windows.lua

local WINDOWS = {
    [5303] = 6448, [5304] = 6449,
    [6438] = 6436, [6436] = 6438,
    [6439] = 6437, [6437] = 6439,
    [6442] = 6440, [6440] = 6442,
    [6443] = 6441, [6441] = 6443,
    [6446] = 6444, [6444] = 6446,
    [6447] = 6445, [6445] = 6447,
    [6448] = 5303, [6449] = 5304,
    [6452] = 6450, [6450] = 6452,
    [6453] = 6451, [6451] = 6453,
    [6456] = 6454, [6454] = 6456,
    [6457] = 6455, [6455] = 6457,
    [6460] = 6458, [6458] = 6460,
    [6461] = 6459, [6459] = 6461,
    [6464] = 6462, [6462] = 6464,
    [6465] = 6463, [6463] = 6465,
    [6468] = 6466, [6466] = 6468,
    [6469] = 6467, [6467] = 6469,
    [6472] = 6470, [6470] = 6472,
    [6473] = 6471, [6471] = 6473,
    [6790] = 6788, [6788] = 6790,
    [6791] = 6789, [6789] = 6791,
    [7027] = 7025, [7025] = 7027,
    [7028] = 7026, [7026] = 7028,
    [7031] = 7029, [7029] = 7031,
    [7032] = 7030, [7030] = 7032,
    [10264] = 10266, [10266] = 10264,
    [10265] = 10267, [10267] = 10265,
    [10488] = 10490, [10490] = 10488,
    [10489] = 10491, [10491] = 10489
}

function onUse(cid, item, fromPosition, itemEx, toPosition)
    local window = WINDOWS[item.itemid]
    if(not window) then
        return false
    end

    local house, position = getHouseFromPos(fromPosition), fromPosition
    if(not house) then
        position.y = position.y - 1
        house = getHouseFromPos(position)
        if(not house) then
            position.y = position.y + 1
            position.x = position.x - 1
            house = getHouseFromPos(position)
        end
    end

    if(house and getHouseFromPos(getThingPosition(cid)) ~= house and not getPlayerCustomFlagValue(cid, PLAYERCUSTOMFLAG_GAMEMASTERPRIVILEGES)) then
        return false
    end

    doTransformItem(item.uid, window)
    return true
end

 

[subyth]

Help?