local firepos = {x=1150, y=987, z=3, stackpos=1}

function onUse(cid, item, fromPos, item2, toPos)
    if item.itemid == 1945 then
        doRemoveItem(getThingfromPos(firepos).uid)
        addEvent(f, 1*60*1000)
    else
        doCreateItem(1487, 1, firepos)
        doTransformItem(item.uid, 1946)
    end
    local f = function()
        if item.itemid == 1946 then
            doTransformItem(item.uid, 1945)
            doCreateItem(1487, 1, firepos)
        end
    end
end