Lua NPC Seller error

[_Aion_]

Hello.
Someone can know fix a old problem for "trade system" bug, if item buyable are "copy" from another?
EX: I have AOL on my server, i opened itemeditor and copy "skin" from AOL, generating new AOL with another ID but same skin from old...
i have this issue, many itens from my server are new and npc cant sell

how fix?

I'm using TFS 0.3.7 for 8.60
Here one script that give this issue.

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)
local talkState = {}
function onCreatureAppear(cid) npcHandler:onCreatureAppear(cid) end
function onCreatureDisappear(cid) npcHandler:onCreatureDisappear(cid) end
function onCreatureSay(cid, type, msg) npcHandler:onCreatureSay(cid, type, msg) end
function onThink() npcHandler:onThink() end
function creatureSayCallback(cid, type, msg)
if(not npcHandler:isFocused(cid)) then
return false
end
local talkUser = NPCHANDLER_CONVbehavior == CONVERSATION_DEFAULT and 0 or cid
local shopWindow = {}
local t = {
          --LOW
      [12636] = {price = 10},
      [12637] = {price = 10},
      [12638] = {price = 10},
      [12639] = {price = 10},
      [12640] = {price = 10},
      [12697] = {price = 10},
      [12748] = {price = 15},
      [12749] = {price = 15},
      [12750] = {price = 15},
      [12751] = {price = 15},
             --HIGH
      [12641] = {price = 20},
      [12642] = {price = 20},
      [12643] = {price = 20},
      [12644] = {price = 20},
      [12645] = {price = 20},
      [12698] = {price = 20},
      [12752] = {price = 30},
      [12753] = {price = 30},
      [12754] = {price = 30},
      [12755] = {price = 30},
     
              --OUTROS
      [12695] = {price = 1},
      [164] = {price = 10},
      [113] = {price = 5},
      [127] = {price = 2},
      [116] = {price = 10},
     
     
            }
local onBuy = function(cid, item, subType, amount, ignoreCap, inBackpacks)
        if  t[item] and doPlayerRemoveItem(cid, 12696, t[item].price)  then
                doPlayerAddItem(cid, item)
                doPlayerRemoveItem(cid, 12696, t[item].price)
                selfSay("Aqui o seu item", cid)
                else
                selfSay("Você não tem "..t[item].price.." 4Fun Diamond's", cid)
          end
        return true
end
if (msgcontains(msg, 'trade') or msgcontains(msg, 'TRADE'))then
                        for var, ret in pairs(t) do
                                        table.insert(shopWindow, {id = var, subType = 0, buy = ret.price, sell = 0, name = getItemNameById(var)})
                                end
                        openShopWindow(cid, shopWindow, onBuy, onSell)
                end
return true
end
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())