PermissionsEx API prefix on AsyncPlayerChatEvent

Hey,
for some reasons the players PermissionsEx prefix wont show up in chat.. I´ve tried everything but it just wont show up


heres the code:

Code:

@EventHandler
  public void onChat(AsyncPlayerChatEvent event)
  {
      Player p = event.getPlayer();
      String name = p.getName();
      PermissionUser user  = PermissionsEx.getUser(p);
      String prefix = user.getPrefix();

    if (claned(event.getPlayer())) {
      event.setFormat("§b(§3" + getClanTag(event.getPlayer()) + "§b) §f" + ChatColor.translateAlternateColorCodes('&', prefix + name) + ": §f" + event.getMessage());
    } else {
        event.setFormat(ChatColor.translateAlternateColorCodes('&', prefix + name) + ": §f" + event.getMessage());
    }
}

Thanks in advanced