Timer sur Scoreboard

private int tasktemps;
private int secondes = 60;
private int minutes = 20;

private void timertemps() {
        tasktemps = Bukkit.getServer().getScheduler()
                .scheduleSyncRepeatingTask(this, new Runnable() {
                    public void run() {
                        secondes--;
                        if (secondes == -1)
                            secondes = 59;
                        if (secondes == 59)
                            minutes--;
                        if (secondes <= 9) {
                            if (minutes <= 9) {
                                points.setDisplayName((prefix + "§c 0"
                                        + minutes + ":0" + secondes));
                            } else {
                                points.setDisplayName((prefix + "§f " + minutes
                                        + ":0" + secondes));
                            }

                        } else {
                            if (minutes <= 9) {
                                points.setDisplayName((prefix + " 0"
                                        + minutes + ":" + secondes));
                                if(minutes <= 5){
                                    points.setDisplayName((prefix + "§4 0"
                                            + minutes + ":" + secondes));
                                }
                                if(minutes == 1){
                                    for(Player pl : Bukkit.getOnlinePlayers()){
                                        pl.playSound(pl.getLocation(), Sound.CLICK, 100, 1);
                                    }
                                }
                            } else {
                                points.setDisplayName((prefix + "§f " + minutes
                                        + ":" + secondes));
                            }
                        }
                        if (minutes == 0) {
                            if (secondes == 0) {
                                //Jeu fini
                                points.setDisplayName((prefix + "§4 00:00"));
                                Bukkit.broadcastMessage(prefix
                                        + "Le jeu est terminé !");
                                Bukkit.getScheduler().cancelTask(tasktemps);

                            }
                        }

                    }

                }, 0L, 20L);
    }