Bollinger-B

Sometimes you can apply Transformer Indicators (MathIndOpInd), but there are too many operations that would require multiple Transforms - so don't try it here.

The TASC Indicator BollingerPctBSmoothed is the same indicator (multiplied by 100) for all practical purposes. See for yourself in a C# Code Window.

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

namespace WealthScript4 
{
    public class MyStrategy : UserStrategyBase
    {
        public override void Initialize(BarHistory bars)
        {
         ind1 = new BollingerPctBSmoothed(bars, 20, 2);  // the 2 here is the smoothing period, not SD, which is another special calc
         PlotIndicator(ind1, WLColor.FromArgb(255,85,125,245), PlotStyle.ThickLine);

         BBLower bBLower = BBLower.Series(bars.Close, 20, 2.0);    
         BBUpper bBUpper = BBUpper.Series(bars.Close, 20, 2.0);    
         TimeSeries ts = 100 * (bars.Close - bBLower) / (bBUpper - bBLower);

         PlotTimeSeriesLine(ts, "my %B", ind1.PaneTag, WLColor.Gold);
        }

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

      private IndicatorBase ind1;
    }
}

Another option is to create a Custom Indicator yourself in Admin mode. Then you can use it in blocks.