Draw-Linear-Regression-Channel

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

namespace WealthScript1
{
   public class MyStrategy : UserStrategyBase
   {
      //create indicators and other objects here, this is executed prior to the main trading loop
      public override void Initialize(BarHistory 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)
      {
         Color col = new Color();
         if (idx > 50)
         {
            if (bars.Close[idx] > bars.Close[idx - 50])
               col = Color.Green;
            else col = Color.Red;
         }
         
         this.DrawLinRegChannel(idx, bars.AveragePriceHL, 45, 2, Color.FromArgb(30, col), PlotStyles.Line, 1);
      }

      //declare private variables below

   }
}