[Help] NPC problems

[killerpk]

Ok, well i'm trying to impliment a VIP type system and i am planning to do so by making it a group (Like GMs, CMs, etc.) but how would i make an npc check for that special group?

I'd like to make the promoter look for that to get to promotions 9-12 and also so it checks that they already have the first promotion.

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 node1 = keywordHandler:addKeyword({'promot'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'I can promote you for 20000 gold coins. Do you want me to promote you?'})
	node1:addChildKeyword({'yes'}, StdModule.promotePlayer, {npcHandler = npcHandler, cost = 20000, level = 20, promotion = 1, text = 'Congratulations! You are now promoted.'})
	node1:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then, come back when you are ready.', reset = true})

local node2 = keywordHandler:addKeyword({'vip'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'I can VIP premote you for 40000 gold coins. Do you want me to premote you you?'})
	node2:addChildKeyword({'yes'}, StdModule.promotePlayer, {npcHandler = npcHandler, cost = 40000, level = 50, promotion = 2, text = 'Congratulations! You have recieved your promotion.'})
	node2:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then, come back when you are ready.', reset = true})


npcHandler:addModule(FocusModule:new())