public static ArrayList<UUID> enderchest = new ArrayList<UUID>();
    private static String playeroffline = Citybuild.prefix + "§cFehler der §bSpieler §cist offline!";

    @Override
    public boolean onCommand(CommandSender cs, Command cmd, String label, String[] args) {
        Player player = (Player) cs;

        if (player.hasPermission("Citybuild.ec")) {

            if (args.length == 0) {
                if (cmd.getName().equalsIgnoreCase("ec") || cmd.getName().equalsIgnoreCase("enderchest")) {
                    player.sendMessage(Citybuild.prefix + "Du hast Erfolgreich deine §bEnderchest §7geöffnet.");
                    player.openInventory(player.getEnderChest());
                }
            } else if (args.length == 1) {
                if (player.hasPermission("Citybuild.ec.other")) {
                    player.sendMessage(Citybuild.noperm);
                    return true;

                    final Player target = Bukkit.getPlayer(args[0]);
                    if (target == null) {
                        player.sendMessage(playeroffline);
                        return true;
                    }
                    player.openInventory(target.getEnderChest());
                    Enderchest_cmd.enderchest.contains(player.getUniqueId());
                } else {
                    player.sendMessage(Citybuild.noperm);
                }

            }
            return false;
        }
        return false;
    }
}