[HELP] instances

is there any guide for creating new instances i search but cant found a good guide thanx

my problem is : i cant take a party or a clan to an instance what is problem or what should i do

   1.  def onTalk (self,npc,player):
   2. st = player.getQuestState(qn)
   3. npcId = npc.getNpcId()
   4. party = player.getParty()
   5. if not party :
   6. html = "5000-01.htm"
   7. else :
   8. have_quest = False
   9. wrong_Level = False
  10. for partyMember in party.getPartyMembers().toArray() :
  11. pst = partyMember.getQuestState("Hisar")
  12. if pst : have_quest = True
  13. if partyMember.getLevel() < 60 or partyMember.getLevel() > 80 :
  14. wrong_Level = True
  15. player_name = partyMember.getName()
  16. if not have_quest :
  17. html = "5000-02.htm"
  18. elif player != party.getLeader() :
  19. party.broadcastToPartyMembers(SystemMessage(2185))
  20. html = "5000-03.htm"
  21. elif wrong_Level :
  22. party.broadcastToPartyMembers(SystemMessage(2097).addString(player_name))
  23. html = "5000-03.htm"
  24. else :
  25. for partyMember in party.getPartyMembers().toArray() :
  26. enterInstance(self, player, "Hisar.xml", tele)
  27. st.playSound("ItemSound.quest_middle")
  28. partyMember.teleToLocation(157041, 53662, -3264)
  29. html = ""
  30.