Disappear with nps

[Dominik ms]

I have this code.
And i want to disappear with npc when player leave, go with distance ex.4 sqm, without say "bye"??

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

local talkState = {}
function onCreatureSay(cid, type, msg)
local talkUser = NPCHANDLER_CONVBEHAVIOR == CONVERSATION_DEFAULT and 0 or cid

	if (msg == "hi") then
		selfSay("Welcome, ".. getCreatureName(cid) ..".", cid, true)
		talkState[talkUser] = 1
	end
end

 

[Dominik ms]

bump