Help-with-converting-a-WL6-script-to-WL7-script

CODE:
using WealthLab.Backtest;
using System;
using WealthLab.Core;
using WealthLab.Indicators;
using System.Drawing;
using System.Collections.Generic;

namespace WealthScript3 
{
    public class MyStrategy : UserStrategyBase
    {
      int extendedBars = 5;
      
        //create indicators and other objects here, this is executed prior to the main trading loop
        public override void Initialize(BarHistory bars)
        {
         if (bars.Scale == HistoryScale.Daily)
         {
            dailyChart(bars);
         }
         if (bars.Scale == HistoryScale.Weekly)
         {
            weeklyChart(bars);
         }
         if (bars.Scale == HistoryScale.Monthly)
         {
            monthlyChart(bars);
         }
        }

        //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
            }
            else
            {
                //code your sell conditions here
            }
        }

      //===========================================================================================================
      // RS Line
      // indexUpFactor - typically 1.02 to 1.2
      // rsDownFactor - typically 0.60 to 0.85
      //----------------------------------------------------------------------------------------------------------- 
      protected void drawIndexAndRsLines(BarHistory bars, double indexUpFactor, double rsDownFactor)
      {
         StartIndex = 200;
         
         // Index Line
         BarHistory SPX = GetHistory(bars, "^GSPC");

         double highRefPrice = Highest.Value(bars.Count - 1 - extendedBars, bars.High, 200);
         TimeSeries SPXNormalized = highRefPrice * indexUpFactor * SPX.Close / SPX.Close[bars.Count - 1];
         PlotTimeSeries(SPXNormalized, "SPXNormalized", "Price", Color.Black);

         // RS Line
         TimeSeries RS = bars.Close / SPX.Close;
         TimeSeries RS2 = bars.Close[bars.Count - 1] * rsDownFactor * RS / RS[bars.Count - 1];
         PlotTimeSeries(RS, "RS", "RS", Color.Blue);
         //PlotSeries(PricePane, RS2, Color.Blue, LineStyle.Solid, 1);
      }

      //===========================================================================================================
      // 5 weeks of Quiet Accumulation
      //----------------------------------------------------------------------------------------------------------- 
      protected void show5WeeksOfQuietAccumulation(BarHistory bars)
      {
         TimeSeries pctChange = ROC.Series(bars.Close, 1);
         
         for (int bar = 5; bar < bars.Count; bar++)
         {
            if (pctChange[bar] > 0 && pctChange[bar] < 3
               && pctChange[bar - 1] > 0 && pctChange[bar - 1] < 3
               && pctChange[bar - 2] > 0 && pctChange[bar - 2] < 3
               && pctChange[bar - 3] > 0 && pctChange[bar - 3] < 3
               && pctChange[bar - 4] > 0 && pctChange[bar - 4] < 3)
            {
               for (int i = 0; i <= 3; i++)
                  DrawBarAnnotation("|", bar, false, Color.Black, 12);
               DrawBarAnnotation("5wQA", bar, false, Color.Black, 12);
            }
         }
      }

      //===========================================================================================================
      // Show 52 weeks high
      //----------------------------------------------------------------------------------------------------------- 
      protected void show52WeeksHigh(BarHistory bars, int numBarsIn52Weeks)
      {
         // 52-week high
         for (int bar = numBarsIn52Weeks; bar < bars.Count; bar++)
         {
            if (bars.High[bar] > Highest.Series(bars.High, numBarsIn52Weeks)[bar - 1])
            {
               // New 52-week high detected.  Paint the chart blue
               SetBackgroundColor(bars, bar, Color.FromArgb(15, Color.Blue));
            }
         }
      }

      //===========================================================================================================
      // Daily Chart
      //----------------------------------------------------------------------------------------------------------- 
      protected void dailyChart(BarHistory bars)
      {
         // Have some space in the right
         bars.ExtendedBars = 5;

         // Simple Moving Averages
         PlotTimeSeries(SMA.Series(bars.Close, 10), "SMA10", "Price", Color.Green);
         PlotTimeSeries(SMA.Series(bars.Close, 50), "SMA50", "Price", Color.Red);
         PlotTimeSeries(SMA.Series(bars.Close, 200), "SMA200", "Price", Color.Black);

         // S&P500 and RS Line
         drawIndexAndRsLines(bars, 1.02, 0.85);

         show52WeeksHigh(bars, 251);
      }

      //===========================================================================================================
      // Weekly Chart
      //----------------------------------------------------------------------------------------------------------- 
      protected void weeklyChart(BarHistory bars)
      {
         // Have some space in the right
         bars.ExtendedBars = 5;

         // Simple Moving Averages
         PlotTimeSeries(SMA.Series(bars.Close, 10), "SMA10", "Price", Color.Red);
         PlotTimeSeries(SMA.Series(bars.Close, 40), "SMA40", "Price", Color.Black);

         // S&P500 and RS Line
         drawIndexAndRsLines(bars, 1.02, 0.60);

         show5WeeksOfQuietAccumulation(bars);
      }

      //===========================================================================================================
      // Monthly  Chart
      //----------------------------------------------------------------------------------------------------------- 
      protected void monthlyChart(BarHistory bars)
      {
         // Simple Moving Averages
         PlotTimeSeries(SMA.Series(bars.Close, 12), "SMA12", "Price", Color.Red);
         PlotTimeSeries(SMA.Series(bars.Close, 60), "SMA60", "Price", Color.Black);
      }
    }
}