// set all NPCs in area AI Level to NORMAL

void main()
{
    object oPC=GetEnteringObject();
    object oNPC;
    int nC=1;
    oNPC=GetNearestObject(OBJECT_TYPE_CREATURE,oPC,nC);
    while(oNPC!=OBJECT_INVALID)
    { // set NPCS
      SetAILevel(oNPC,AI_LEVEL_NORMAL);
      nC++;
      oNPC=GetNearestObject(OBJECT_TYPE_CREATURE,oPC,nC);
    } // set NPCS
}