Scoreboards

package fr.src.other;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.scoreboard.DisplaySlot;
import org.bukkit.scoreboard.Objective;
import org.bukkit.scoreboard.Score;
import org.bukkit.scoreboard.Scoreboard;
import org.bukkit.scoreboard.ScoreboardManager;

import fr.src.main.Deathrun;

public class CustomScoreboard {

    Deathrun main;
    public CustomScoreboard(Deathrun main)
    {
        this.main = main;
    }

    public ScoreboardManager manager = Bukkit.getScoreboardManager();
    public Scoreboard board = manager.getNewScoreboard();
    public Objective o = board.registerNewObjective("Nom", "morts");
    public int task;

    public void ScoreBoard()
    {
            o.setDisplaySlot(DisplaySlot.SIDEBAR);

            for(Player online : Bukkit.getOnlinePlayers()){

                online.setScoreboard(board);

            }
    }

    public void Timer()
    {
            task = Bukkit.getServer().getScheduler().scheduleSyncRepeatingTask(main, new Runnable() {

                    @SuppressWarnings("deprecation")
                    @Override
                    public void run() {

                        for(Player p : main.AGS.Players)
                        {
                            o.setDisplayName("Liquid level : "+(main.AGS.LiquidLevel - (int) main.getConfig().getInt("Options.LiquidDefaultLevel")));
                            if(!main.AGS.Dead.contains(p))
                            {
                                Score s = o.getScore(p);
                                s.setScore((int)p.getLocation().getY() - (int) main.getConfig().getInt("Options.LiquidDefaultLevel"));
                            }
                        }

                        if(main.AGS.Start == false)
                        {
                            for(Player p : main.AGS.Players)
                            {
                                o.setDisplayName("Players ("+main.AGS.Players.size()+"/"+main.getConfig().getInt("Options.AmountMax")+")");
                                Score s = o.getScore(p);
                                s.setScore(main.AGS.Players.indexOf(p));
                            }
                        }

                    }
            } , 0, 20L);
    }

}