-DUPLICATE-PlotIndicator-fails-to-plot-a-histogram

CODE:
      public override void Initialize(BarHistory bars)
      {
         momentum = new Momentum(bars.Close, 12);
         smoothedMomentum = new EMA(momentum, 5);
         smoothedMomentum.Description = "Smoothed momentum oscillator";
         PlotIndicator(smoothedMomentum, WLColor.Green, PlotStyle.Histogram, paneTag: "smoothedMomentum");
         //PlotTimeSeries(smoothedMomentum, smoothedMomentum.Description, "smoothedMomentum", WLColor.Green, PlotStyle.HistogramTwoColor);
      }

      IndicatorBase momentum, smoothedMomentum;