SROC-EntryLong-below-20

CODE:
using finantic.Indicators;
using WealthLab.Backtest;
using WealthLab.Core;
using WealthLab.Indicators;


namespace WealthLab8Training
{
    public class srocLong : UserStrategyBase

    {
        public srocLong()
        {
            AddParameter("PeriodSROC", ParameterType.Int32, 15, 2, 100, 2);
            AddParameter("DownPercentage", ParameterType.Double, 16, 2, 32, 2);

        }

        public override void Initialize(BarHistory bars)
        {
            _indicator = new SROC(bars.Close, Parameters[0].AsInt);
            PlotIndicator(_indicator, WLColor.Black, PlotStyle.ThickLine);

            StartIndex = 50;
        }

        public override void Execute(BarHistory bars, int idx)
        {
           // _enterShort = _indicator[idx] >= Parameters[1].AsDouble;
            {
                if (!HasOpenPosition(bars, PositionType.Long))
                {
                    if (_indicator < -20 != null)

                    {
                        PlaceTrade(bars, TransactionType.Buy, OrderType.Market, 0, 0, "BuyAtMarket");
                    }

                }
            }
        }


        private IndicatorBase _indicator;

        private bool _enterShort;
    }
}