Lua Npc

[Jamaika]

I have a problem with my npc.
I can become the item unlimited..
What i must to change when i would like become it only ones?

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
		
		
    if msgcontains(msg,'out') then
        selfSay('Of course, the world is dangerous. I have a gift for you.', cid)
        doPlayerAddItem(cid,8704)
        getPlayerStorageValue(cid,48990,1)
	    doPlayerSendTextMessage(cid,MESSAGE_INFO_DESCR, "You have become a small potion!")
	
    elseif getPlayerStorageValue(cid,48990) == 1 then
         selfSay("You already have become the gift")
	end

    
		 
		 
    
		
		
end		
npcHandler:setCallback(CALLBACK_ONTHINK, thinkCallback)
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())

 

[Cykotitan]

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)

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
	elseif msgcontains(msg,'out') then
		if getPlayerStorageValue(cid, 48990) == 1 then
			selfSay('You already have received the gift.')
		else
			selfSay('Of course, the world is dangerous. I have a gift for you.', cid)
			doPlayerAddItem(cid, 8704, 1)
			getPlayerStorageValue(cid, 48990, 1)
			doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, 'You have received a small potion!')
		end
	end
	return true
end
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())

 

[Jamaika]

Thanks, for help ;-)