My-code-isn-t-plotting-overbought-oversold-levels-correctly

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

namespace WealthScript1 
{
   public class TASC202010 : UserStrategyBase
   {
      public override void Initialize(BarHistory bars)
      {
         SMI smi = new SMI(bars,8);
         PlotTimeSeriesOscillator((TimeSeries)smi, smi.Description, smi.PaneTag, 40.0, -40.0, WLColor.Fuchsia, WLColor.Green, WLColor.Red);
         /* PlotIndicator(smi, WLColor.Fuchsia);
         DrawLine(0, 40,bars.Count-1, 40,WLColor.Green,2,LineStyle.Dotted,smi.PaneTag);
         DrawLine(0,-40,bars.Count-1,-40,WLColor.Red,  2,LineStyle.Dotted,smi.PaneTag); */
      }

      public override void Execute(BarHistory bars, int idx) { }
   }
}