TFS 0.X bug npc sell itens with storage

[fyalhed]

i tried to make this npc to sell assassin star to who have the storage for assassins

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) 
    local shopModule = ShopModule:new()
    npcHandler:addModule(shopModule)

    if getPlayerStorageValue(cid, 40001) == 1 then    
        local shopModule = ShopModule:new()
        npcHandler:addModule(shopModule)
        shopModule:addBuyableItem({'assassin star'}, 7368, 500, 'assassin star')
        shopModule:addBuyableItem({'throwing star'}, 2399, 150, 'assassin star')
    else
        selfSay("You aren't a assassin!", cid)
    end
end

npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())

the check is working, but when player is a assassin and try to buy
npc says: "Sorry, I'm not offering anything."

why?

 

[Addams]

Remove this

       local shopModule = ShopModule:new()
        npcHandler:addModule(shopModule)
        shopModule:addBuyableItem({'assassin star'}, 7368, 500, 'assassin star')
        shopModule:addBuyableItem({'throwing star'}, 2399, 150, 'assassin star')

and try this instead

        if doPlayerRemoveMoney(cid, 50000) then
           doPlayerAddItem(cid, 7368,100)