ScoreBoard Problem

Hi,
So I have this small plugin that I made that I keep updating on my server.

Code:java

    @EventHandler
    public void onPlayerLogin(PlayerJoinEvent event) {
        Player p = event.getPlayer();
        ScoreboardManager manager = Bukkit.getScoreboardManager();
 
        Scoreboard board = manager.getNewScoreboard();
 
 
 
        Objective objective = board.registerNewObjective("showhealth", "dummy");
 
        objective.setDisplaySlot(DisplaySlot.BELOW_NAME);
 
        objective.setDisplayName("/ 20");
 
 
 
 
 
          p.setScoreboard(board);
 
}
 
 
 
 
 
 
 
 
    @EventHandler
    public void PlayerChat(PlayerChatEvent event){
        Player p = event.getPlayer();
        ScoreboardManager manager = Bukkit.getScoreboardManager();
 
        Scoreboard board = manager.getNewScoreboard();
 
 
 
        Objective objective = board.registerNewObjective("showhealth2", "dummy");
 
        objective.setDisplaySlot(DisplaySlot.BELOW_NAME);
 
        objective.setDisplayName(getHeroes().getHero(event.getPlayer()).getHeroClass().getDescription());
 
 
 
 
 
          p.setScoreboard(board);
 
 
 
 
    }

It has problem.

for example Two Players on my server

One Player has class : citizen

Other Player has class : admin

If One Player looks Other Player, Other Player below name is citizen.

If Other Player looks One Player, One Player below name is admin.



I want to know how to fix it.

English is my second language, so please excuse any English mistakes.

Thanks!