Plus Emulator Command Problem

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Plus.HabboHotel.Rooms;
using Plus.HabboHotel.Pathfinding;
using Plus.HabboHotel.GameClients;
using Plus.Communication.Packets.Outgoing.Rooms.Chat;
using Plus.Communication.Packets.Outgoing.Moderation;
using Plus.Database.Interfaces;
using Plus.Core;

namespace Plus.HabboHotel.Rooms.Chat.Commands.User
{
    class WartungCommand : IChatCommand
    {
        public string PermissionRequired
        {
            get { return ""; }
        }

        public string Parameters
        {
            get { return ""; }
        }

        public string Description
        {
            get { return ""; }
        }

        public void Execute(GameClients.GameClient Session, Rooms.Room Room, string[] Params)
        {
            if (Params.Length == 1)
            {
                Session.SendWhisper("Der Wartungsmodus wurde erfolgreich aktiviert.");
                return;
            }
            int OnlineUsers = PlusEnvironment.GetGame().GetClientManager().Count;
            int RoomCount = PlusEnvironment.GetGame().GetRoomManager().Count;
            using (var dbClient = PlusEnvironment.GetDatabaseManager().GetQueryReactor())
            {
                dbClient.RunQuery("UPDATE cms_settings SET maintenance = '1'");
            }

           
            }
        }
    }