region.js

var region = "EU";
var role = "123";
var name = user.getNickname();
if(name == null || name === "null") {
  name = user.getName();
}
var newNickname = region + " " + name;
if(newNickname.length() > 32) {
  newNickname = newNickname.substring(0, 33);
}
if(!isRoled()) {
  manager.addRole(user, guild.getRole(role));
  manager.nickname(user, newNickname);
  channel.message("You have been added to the " + region + " region.");
} else {
  manager.removeRole(user, guild.getRole(role));
  manager.nickname(user, user.getName());
  channel.message("You have been removed from the " + region + " region.");
}

function isRoled() {
 for each(rank in user.getRoles()) {
   if(rank.getID() === role) {
    return true; 
   }
 }
 return false;
}