Pet npc help

[Death-Pulse]

My pet trainer doesn't respond im usieng 8.6 0.3.6

Error in server

[28/09/2014 00:15:48] [Error - Npc interface]
[28/09/2014 00:15:48] data/npc/scripts/pet trainer.LUA:onCreatureSay
[28/09/2014 00:15:48] Description:
[28/09/2014 00:15:48] data/npc/scripts/pet trainer.LUA:43: attempt to call global 'creatureGetName' (a nil value)
[28/09/2014 00:15:48] stack traceback:
[28/09/2014 00:15:48]     data/npc/scripts/pet trainer.LUA:43: in function <data/npc/scripts/pet trainer.LUA:39>

Here is my npc script

local focus = 0
local talk_start = 0
local talk_state = 0
local costPerLevel = 300
 
dofile("./petConfig.lua")
             
 
 
function onThingMove(creature, thing, oldpos, oldstackpos)
 
end
 
 
function onCreatureAppear(creature)
 
end
 
 
function onCreatureDisappear(cid, pos)
     if focus == cid then
         selfSay('How rude!.')
         focus = 0
         talk_start = 0
     end
end
 
 
function onCreatureTurn(creature)
 
end
 
 
function msgcontains(txt, str)
      return (string.find(txt, str) and not string.find(txt, '(%w+)' .. str) and not string.find(txt, str .. '(%w+)'))
end
 
 
function onCreatureSay(cid, type, msg)
      msg = string.lower(msg)
    if getDistanceToCreature(cid) < 4 then
          if (msgcontains(msg, 'hi') and (focus == 0)) then
              selfSay('Hello ' .. creatureGetName(cid) .. '! I can take you to the train!')
                focus = cid
                talk_start = os.clock()
 
          elseif msgcontains(msg, 'hi') and (focus ~= cid) then
              selfSay('Sorry, ' .. creatureGetName(cid) .. '! I talk to you in a minute.')
        end
 
        if msgcontains(msg, 'revive') and focus == cid then
            if  isCreature(getPlayerStorageValue(cid, storages.petUid)) == 0 then
                if getPlayerStorageValue(cid, storages.petIsOnline) == 2 then
                    selfSay('YOUR PET DIED?!, YOU\'R A BAD OWNER, THIS WILL COST YOU ' .. getPlayerLevel(cid)*costPerLevel .. ' GOLD COINS!, AGREE?!')
                    talk_state = 1
                else
                    selfSay('Your pet is alive.')
                end
            else
                selfSay('Your pet is standing next to you.')
            end
        talk_start = os.clock()
        end
        if msgcontains(msg, 'yes') and focus == cid and talk_state == 1 then
            if doPlayerRemoveMoney(cid, getPlayerLevel(cid)*costPerLevel) == 1 then
                setPlayerStorageValue(cid, storages.petIsOnline, 1)
                selfSay('You can now summon again your pet.')
            else
                selfSay('You don\'t have enought money.')
            end
        talk_state = 0
        talk_start = os.clock()
        end                
                
        if msgcontains(msg, 'bye') then
            selfSay('Good bye, ' .. creatureGetName(cid) .. '!')
            focus = 0
            talk_start = 0
            talk_state = 0
        end
    end
end
 
 
function onCreatureChangeOutfit(creature)
 
end
 
 
function onThink()
 
    doNpcSetCreatureFocus(focus)
      if (os.clock() - talk_start) > 30 then
          if focus > 0 then
              selfSay('Next Please...')
          end
              focus = 0
                        talk_state = 0
      end
    if focus ~= 0 then
         if getDistanceToCreature(focus) > 5 then
                        talk_state = 0
             selfSay('Good bye then.')
                        talk_state =  0
             focus = 0
         end
     end
end

 

[Limos]

getCreatureName(cid)

 

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