void main()
{
  object oClicker = GetClickingObject();
  object oTarget = GetTransitionTarget(OBJECT_SELF);

  if (GetSubRace(oClicker)=="Vampire")
  {
    SendMessageToPC(oClicker, "You cannot enter.");
  }
  else
  {
    SetAreaTransitionBMP(AREA_TRANSITION_RANDOM);
    AssignCommand(oClicker,JumpToObject(oTarget));
  }
}