Can-code-from-Traders-Tips-2019-be-run-in-WL8

CODE:

using WealthLab.Backtest;
using System;
using WealthLab.Core;
using WealthLab.Data;
using WealthLab.Indicators;
using System.Collections.Generic;

namespace WealthScript1 
{
    public class MyStrategy : UserStrategyBase
    {
      //construtor
      public MyStrategy() : base()
      {
         AddParameter("Period", ParameterType.Int32, 20, 5, 50, 5);
         AddParameter("Std Dev", ParameterType.Double, 2.0, 0.5, 5.0, 0.5);
      }
      
        //create indicators and other objects here, this is executed prior to the main trading loop
        public override void Initialize(BarHistory bars)
        {
         int period = Parameters[0].AsInt;
         double stdDev = Parameters[1].AsDouble;
         bbL = BBLower.Series(bars.Close, period, stdDev);
         bbU = BBUpper.Series(bars.Close, period, stdDev);
         PlotIndicatorBands(bbL, bbU, WLColor.Blue, 2, 25);
         StartIndex = period;
        }

        //execute the strategy rules here, this is executed once for each bar in the backtest history
        public override void Execute(BarHistory bars, int idx)
        {
         if (!HasOpenPosition(bars, PositionType.Long))
         {
            //code your buy conditions here
            if (
                  //touches the lower band
                  (bars.Close[idx - 1] > bbL[idx - 1]) && ((bars.Low[idx - 1] < bbL[idx - 1]) || (bars.Low[idx - 2] < bbL[idx - 2]))
                  //engulfing:
                  && (bars.Close[idx - 2] < bars.Open[idx - 2]) && (bars.Close[idx - 1] > bars.Open[idx - 1]) &&
                  (bars.Open[idx - 1] < bars.Close[idx - 2]) && (bars.Close[idx - 1] > bars.Open[idx - 2]) &&
                  (bars.Close[idx] > bars.High[idx - 1])
               )
               PlaceTrade(bars, TransactionType.Buy, OrderType.Market);
         }
            else
            {
            //code your sell conditions here
            if (bars.High[idx] > bbU[idx])
               PlaceTrade(bars, TransactionType.Sell, OrderType.Market);
            }
        }

      //declare private variables below
      private BBLower bbL;
      private BBUpper bbU;
    }
}