Npc pra premiums

Hola chicos, necesito un script para que mi Npc venda items solamente alos premium account.. ayuda porfavor

Código:


local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)
local talkState, xmsg = {}, {}
 
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
 


local items = {
    ["thaian sword"] = {cantidad = 10000, itemid = 7391}, 
    ["golden helmet"] = {cantidad = 10000, itemid = 2471}
}
 
function creatureSayCallback(cid, type, msg)
    if not npcHandler:isFocused(cid) then
        return false
    end
   
    if not isPremium(cid) then
        selfSay("Only premium players can trade with me.", cid)
        return false
    end
 
    local talkUser = NPCHANDLER_CONVBEHAVIOR == CONVERSATION_DEFAULT and 0 or cid
 
    local x = items[msg:lower()]
 
    if msgcontains(msg, 'buy') then
   
   
        selfSay('Which donate item would you like to buy?', cid)
       
       
        talkState[talkUser] = 2
       
       
    elseif x and talkState[talkUser] >= 1 then
   
   
        selfSay('Do you want to buy 1 '..msg..' for '..x.cantidad..' money?', cid)
       
       
        xmsg[cid] = msg
       
       
        talkState[talkUser] = 3
       
       
    elseif msgcontains(msg, 'yes') and talkState[talkUser] == 3 then
   
   
   
   
        x = items[xmsg[cid]:lower()]
       
       
        if getPlayerMoney(cid) >= x.cantidad then
       
            selfSay('Here you are, have fun with it.', cid)
           
           
            doPlayerAddItem(cid, x.itemid, 1)
           
            doPlayerRemoveMoney(cid, x.cantidad)
           
           
     
           
            talkState[talkUser] = 1
        else
            selfSay('You don\'t have enough money.', cid)
            talkState[talkUser] = 1
        end
    elseif msgcontains(msg, 'list') then
        text = 'Donation Items\n'
        for i, x in pairs(items) do
                text = text .. "\n" .. i .. " - "..x.cantidad.." money"
        end
        doShowTextDialog(cid, 7391, "" .. text)
        talkState[talkUser] = 1
    elseif talkState[talkUser] == 2 then
        selfSay('You can\'t buy this item from me, look in the {list} which items you can buy.', cid)
    else
        selfSay('What? I don\'t understand what you mean with '..msg..'.', cid)
    end
    return true
end
 
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())


Código:


<?xml version="1.0" encoding="UTF-8"?>
<npc name="Eryn" nameDescription="Eryn, the rune vendor" script="runes.lua" walkinterval="2000" floorchange="0" skull="green">
   <health now="100" max="100"/>
   <look type="130" head="39" body="122" legs="125" feet="57" addons="0"/>
   <parameters>
      <parameter key="message_greet" value="Hello |PLAYERNAME|. dime {list}."/>
      <parameter key="message_decline" value="Is |TOTALCOST| gold coins too much for you? Get out of here!"/>
   </parameters>
</npc>