@EventHandler
    private static void onVanish(PlayerCommandPreprocessEvent e) {

    	Player p = e.getPlayer();
    	String msg = e.getMessage();
    	String[] args = msg.split(" ");


    	for (Player autres : Bukkit.getOnlinePlayers()) {
    		if(args[0].equalsIgnoreCase("/invisible")) {
    			if(args.length == 1) {

    				p.sendMessage(ChatColor.GREEN + "/invisible " + ChatColor.BLUE + "<on/off>");
    				e.setCancelled(true);
    		}

    		if(args[0].equalsIgnoreCase("on")) {
    			if(p.hasPermission("invisible.on")) {

    			p.sendMessage(ChatColor.RED + "Tu es desormais invisible");
    			autres.hidePlayer(p);
    			e.setCancelled(true);
    		}

    		}

    		if(args[0].equalsIgnoreCase("off")) {
    			if(p.hasPermission("invisible.off")) {


    			p.sendMessage(ChatColor.GREEN + "Tu es désormais visible");
    			autres.showPlayer(p);
    			e.setCancelled(true);
    		}

    		}

    		}

    	}

    }