npc not open trade window

[iib0w]

Hi guys, i run 0.4, 3337, 8.6, and i really need this npc to work,
I want npc to sell items for another item in trade window.

I use this script and get this error

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 = {
          [2195] = {price = 15, price2 = 10}, -- [ITEMID TO SELL] = {Buy cost (0 = not buyable), sell cost (0 = not sellable)}
          [2493] = {price = 25, price2 = 0},
          [2361] = {price = 30, price2 = 0},
          [8851] = {price = 20, price2 = 0},
          [8925] = {price = 30, price2 = 0},
          [2640] = {price = 50, price2 = 0},
          [2494] = {price = 100, price2 = 0},
          [9932] = {price = 50, price2 = 0},
          [2472] = {price = 70, price2 = 0},
          [8931] = {price = 100, price2 = 0}
          }
local TradeItem = 6527
local onBuy = function(cid, item, subType, amount, ignoreCap, inBackpacks)
    if getPlayerItemCount(cid, TradeItem) < t[item].price*amount then
        selfSay("You don't have enough christmas token.", cid)
    else
        doPlayerAddItem(cid, item, amount)
        doPlayerRemoveItem(cid, TradeItem, t[item].price*amount)
        doPlayerSendTextMessage(cid, 20, "You have bought " .. amount .. "x " .. getItemName(item) .. " for " .. t[item].price*amount .. " christmas token.")
    end
    return true
end
local onSell = function(cid, item, subType, amount)
    doPlayerRemoveItem(cid, item, amount)
    doPlayerAddItem(cid, TradeItem, t[item].price2*amount)
    doPlayerSendTextMessage(cid, 20, "You have sold " .. amount .. "x " .. getItemName(item) .. " for " .. t[item].price*amount .. " christmas token.")
    --selfSay("Here your are!", cid)
    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 = ret.price2, name = getItemName(var)})
    end
    openShopWindow(cid, shopWindow, onBuy, onSell) end
    return true
end
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())

This is the error when i say trade to npc.

[12:10:39.451] [Error - NpcScript Interface]
[12:10:39.454] data/npc/scripts/seller.lua:onCreatureSay
[12:10:39.457] Description:
[12:10:39.458] (LuaInterface::luaGetThing) Thing not found

[12:10:39.460] [Error - NpcScript Interface]
[12:10:39.463] data/npc/scripts/seller.lua:onCreatureSay
[12:10:39.466] Description:
[12:10:39.468] data/lib/050-function.lua:300: attempt to index a boolean value
[12:10:39.472] stack traceback:
[12:10:39.473] data/lib/050-function.lua:300: in function 'getItemName'
[12:10:39.477] data/npc/scripts/seller.lua:48: in function 'callback'
[12:10:39.480] data/npc/lib/npcsystem/npchandler.lua:423: in function 'onCreatureSay'
[12:10:39.483] data/npc/scripts/seller.lua:7: in function

I really need this to work, What seems to be the problem? anyone able to help

 

[Addams]

All you have to do is changing getItemName to getItemNameById
Use this one I have edited it and should work.

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 = {
          [2195] = {price = 15, price2 = 10}, -- [ITEMID TO SELL] = {Buy cost (0 = not buyable), sell cost (0 = not sellable)}
          [2493] = {price = 25, price2 = 0},
          [2361] = {price = 30, price2 = 0},
          [8851] = {price = 20, price2 = 0},
          [8925] = {price = 30, price2 = 0},
          [2640] = {price = 50, price2 = 0},
          [2494] = {price = 100, price2 = 0},
          [9932] = {price = 50, price2 = 0},
          [2472] = {price = 70, price2 = 0},
          [8931] = {price = 100, price2 = 0}
          }
local TradeItem = 6527
local onBuy = function(cid, item, subType, amount, ignoreCap, inBackpacks)
    if getPlayerItemCount(cid, TradeItem) < t[item].price*amount then
        selfSay("You don't have enough christmas token.", cid)
    else
        doPlayerAddItem(cid, item, amount)
        doPlayerRemoveItem(cid, TradeItem, t[item].price*amount)
        doPlayerSendTextMessage(cid, 20, "You have bought " .. amount .. "x " .. getItemNameById(item) .. " for " .. t[item].price*amount .. " christmas token.")
    end
    return true
end
local onSell = function(cid, item, subType, amount)
    doPlayerRemoveItem(cid, item, amount)
    doPlayerAddItem(cid, TradeItem, t[item].price2*amount)
    doPlayerSendTextMessage(cid, 20, "You have sold " .. amount .. "x " .. getItemNameById(item) .. " for " .. t[item].price*amount .. " christmas token.")
    --selfSay("Here your are!", cid)
    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 = ret.price2, name = getItemNameById(var)})
    end
    openShopWindow(cid, shopWindow, onBuy, onSell) end
    return true
end
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())

 

[iib0w]

solved thnx