The bot does not set a tp as it should every time it opens a position

I have this code of a robot that works perfectly fine, but the only issue is that it doesn't set a tp on the position it opens:

using System;
using cAlgo.API;

namespace CandlestickBot
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.FullAccess)]
    public class CandlestickBot : Robot
    {
        [Parameter("Lot Size", DefaultValue = 10000, MinValue = 1)]
        public int LotSize { get; set; }

        [Parameter("Take Profit (pips)", DefaultValue = 20, MinValue = 1)]
        public int TakeProfitPips { get; set; }  // Changed parameter name to avoid conflict

        private int _bullishCount;
        private int _bearishCount;
        private PositionState _positionState;
        private double _lastClose;
        private double _lastOpen;

        protected override void OnStart()
        {
            _bullishCount = 0;
            _bearishCount = 0;
            _positionState = PositionState.Flat;
        }

        protected override void OnTick()
        {
            if (_positionState == PositionState.Long &&
                (_lastClose < _lastOpen || _lastClose < _lastOpen))
            {
                ClosePosition();
                _positionState = PositionState.Flat;
            }
            else if (_positionState == PositionState.Short &&
                     (_lastClose > _lastOpen || _lastClose > _lastOpen))
            {
                ClosePosition();
                _positionState = PositionState.Flat;
            }
        }

        protected override void OnBar()
        {
            var currentBar = Bars.Last(1);
            var previousBar = Bars.Last(2);

            _lastClose = currentBar.Close;
            _lastOpen = currentBar.Open;

            double takeProfit = TakeProfitPips * Symbol.PipSize; // Calculate TP in price units
            double lotSize = (double)LotSize;

            if (_lastClose > _lastOpen && currentBar.Close > previousBar.Close)
            {
                _bullishCount++;

                if (_bullishCount >= 2 && _positionState == PositionState.Flat)
                {
                    var takeProfitPrice = Symbol.Bid + takeProfit;
                    ExecuteMarketOrder(TradeType.Buy, SymbolName, lotSize, "Buy Order", 0, takeProfitPrice, null);
                    _positionState = PositionState.Long;
                }
            }
            else if (_lastClose < _lastOpen && currentBar.Close < previousBar.Close)
            {
                _bearishCount++;

                if (_bearishCount >= 2 && _positionState == PositionState.Flat)
                {
                    var takeProfitPrice = Symbol.Ask - takeProfit;
                    ExecuteMarketOrder(TradeType.Sell, SymbolName, lotSize, "Sell Order", 0, takeProfitPrice, null);
                    _positionState = PositionState.Short;
                }
            }
            else
            {
                _bullishCount = 0;
                _bearishCount = 0;
            }
        }

        private void ClosePosition()
        {
            foreach (var position in Positions)
            {
                ClosePosition(position);
            }
        }

        private enum PositionState
        {
            Flat,
            Long,
            Short
        }
    }
}