[xAndrewx]

function warp() { 
  // Declare Locations Array 
  temp.locations = { 
    {"onlinestartlocal.nw", 30, 30}, 
    {"someotherlevel.nw", 30, 30} 
  }; 

  // Select a location 
  temp.location = randomstring(temp.locations); 

  // Warpto Location 
  warpto(temp.location[0], temp.location[1], temp.location[2]); 

  // Update (Forces NPC to save changes, probably not needed but whatever) 
  this.trigger("NPCUpdate", ""); 
}  

I just used randomstring