Plotting-textboxes-above-below-Bars

Theoretically you should be able to accomplish this using SetTextDrawingOptions, minus the little triangular callout. But I see that it's not behaving correctly since the WL8 migration, so I corrected it for Build 22. After that the code below should work:

CODE:

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

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)
        {
         if (idx > bars.Count - 100)
         {
            int n = (int)((idx * 123.0) % 7.0);
            if ((idx * 32.0) % 3.0 == 0)
            {
               DrawBarAnnotation(n.ToString(), idx, false, WLColor.White, 10);
               if (idx > bars.Count - 20)
               {
                  if (!drawn)
                  {
                     drawn = true;
                     SetTextDrawingOptions(WLColor.Magenta, WLColor.Magenta, 1);
                     DrawBarAnnotation("XO", idx, false, WLColor.White, 14);
                     SetTextDrawingOptions(WLColor.Transparent, WLColor.Transparent, 0);
                  }
               }
            }
         }
        }

      //declare private variables below
      private bool drawn = false;
    }
}