How to stop this bot after closing all prositions?

This bot works on Gold with very good results if you stop it on time. I made some modifications to it. So now, when equity reaches your specified profit or loss level then it closes all the positions. What I want is that when it closes all the positions it should also stop without opening any new positions. Can anyone please help?

using cAlgo.API;
using cAlgo.API.Indicators;
using System;
using System.Linq;

namespace cAlgo.Robots
{
    [Robot(AccessRights = AccessRights.None)]
    public class NdnghiaMACD : Robot
    {
        private MacdCrossOver _MACD;

        [Parameter("Initial Volume Percent", DefaultValue = 0.01, MinValue = 0.01)]
        public double InitialVolumePercent { get; set; }

        [Parameter("Period", DefaultValue = 1100)]
        public int Period { get; set; }

        [Parameter("Long Cycle", DefaultValue = 3)]
        public int LongCycle { get; set; }

        [Parameter("Short Cycle", DefaultValue = 1)]
        public int ShortCycle { get; set; }

        [Parameter("Stop Loss", DefaultValue = 100)]
        public int StopLoss { get; set; }
        [Parameter("Take Profit", DefaultValue = 300)]
        public int TakeProfit { get; set; }
        
        [Parameter(DefaultValue = 0.0)]
        public double EquityTakeProfit { get; set; }

        [Parameter(DefaultValue = 0.0)]
        public double EquityStopLoss { get; set; }

        [Parameter("Signal-line crossover true:if Signal-line crossover false: Zero crossover", DefaultValue = true)]
        public bool IsSignalLineCrossover { get; set; }

        protected override void OnStart()
        {
            _MACD = Indicators.MacdCrossOver(LongCycle, ShortCycle, Period);
        }

        protected override void OnBar()
        {
            var volumne = Math.Floor(Account.Balance * 0 * InitialVolumePercent / 100) + 1;


            {


                if (_MACD.MACD.Last(2) < _MACD.Signal.Last(2) && _MACD.MACD.Last(1) > _MACD.Signal.Last(1))
                {
                    var position = Positions.Find("NdnghiaMACD");
                    if (position != null && position.TradeType == TradeType.Sell)
                    {

                    }
                    ExecuteMarketOrder(TradeType.Buy, Symbol.Name, volumne, "NdnghiaMACD", 0, 60);

                    // ExecuteMarketOrder(TradeType.Buy, Symbol.Name, volumne, "NdnghiaMACD", StopLoss, TakeProfit);
                }

                if (_MACD.MACD.Last(2) < _MACD.Signal.Last(2) && _MACD.MACD.Last(1) > _MACD.Signal.Last(1))
                {
                    var position = Positions.Find("NdnghiaMACD");
                    if (position != null && position.TradeType == TradeType.Buy)
                    {

                    }
                    ExecuteMarketOrder(TradeType.Sell, Symbol.Name, volumne, "NdnghiaMACD", 0, 60);
                    // ExecuteMarketOrder(TradeType.Sell, Symbol.Name, volumne, "NdnghiaMACD", StopLoss, TakeProfit);
                }


                {

                    {

                    }
                }
            }
        }
        
        protected override void OnTick()
        {
            //if account equity is more than equity take profit or less than equity stop loss, we close all positions
            if (Account.Equity > EquityTakeProfit || Account.Equity < EquityStopLoss)
                foreach (var position in Positions)
                    ClosePosition(position);
                    
        }
       
    }

}