on 2.15

[Snow]

function onUse(cid, item, fromPosition, itemEx, toPosition) 
    if item.aid == 40186 then 
        if(getPlayerPosition(cid).x == POS_CARPET_TELEPORT[1].x and getPlayerPosition(cid).y == POS_CARPET_TELEPORT[1].y) then 
            doTeleportThing(cid, POS_CARPET_TELEPORT[2]) 
            doSendMagicEffect(POS_CARPET_TELEPORT[2], CONST_ME_TELEPORT) 
        elseif(getPlayerPosition(cid).x == POS_CARPET_TELEPORT[2].x and getPlayerPosition(cid).y == POS_CARPET_TELEPORT[2].y) then 
            doTeleportThing(cid, POS_CARPET_TELEPORT[1]) 
            doSendMagicEffect(POS_CARPET_TELEPORT[1], CONST_ME_TELEPORT) 
        end 
    end 
return TRUE
end

Isn't working on 2.15 and it worked on 3.7

Any fix?