Help with secondary Volumetric Bar series

I am trying to use a secondary volumetric bars series in a custom ninjatrader indicator and for the first step I am trying to mirror the built in cvd indicator. In the code below BarsInProgress == 1 is never hit and my print statement doesnt show. This results in Values[0][0] always being 0. What am I doing wrong? Any help is appreciated!

namespace NinjaTrader.NinjaScript.Indicators.RenkoVolumeIndicators
{
public class customCVD : Indicator
{
private double accumulator;

	protected override void OnStateChange()
	{
		if (State == State.SetDefaults)
		{
			Description									= @"Enter the description for your new custom Indicator here.";
			Name										= "customCVD";
			Calculate									= Calculate.OnEachTick;
			IsOverlay									= false;
			DisplayInDataBox							= true;
			DrawOnPricePanel							= true;
			DrawHorizontalGridLines						= true;
			DrawVerticalGridLines						= true;
			PaintPriceMarkers							= true;
			ScaleJustification							= NinjaTrader.Gui.Chart.ScaleJustification.Right;
			//Disable this property if your indicator requires custom values that cumulate with each new market data event. 
			//See Help Guide for additional information.
			IsSuspendedWhileInactive					= true;
			
			AddPlot(Brushes.Blue, "Delta");
		}
		else if (State == State.Configure)
		{
			AddVolumetric(Bars.Instrument.MasterInstrument.Name, BarsPeriodType.Tick, 1, VolumetricDeltaType.BidAsk, 1);
		}
		else if (State == State.DataLoaded)
        {
            accumulator = 0;
        }
	}

	protected override void OnBarUpdate()
	{
		if (CurrentBar < 1) return;
		
		
		NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsType barsType = BarsArray[1].BarsType as 
		NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsType;
		
		if (barsType == null)
      		return;
		
		//Print(barsType.Volumes[0].BarDelta);
		//On volumetric bars update
		if (BarsInProgress == 1)
        {
            // Calculate delta for this tick
            double tickDelta = barsType.Volumes[CurrentBar].BarDelta;  //  askVol - bidVol;
			Print("Cumulative delta (bar): " + barsType.Volumes[CurrentBar].BarDelta);

            // Accumulate
            accumulator += tickDelta;
        }
        else if (BarsInProgress == 0)
        {
            // Set the value for this Renko bar
            Values[0][0] = accumulator;

            // Reset accumulator for the next Renko bar
            accumulator = 0;
        }
	}
}

}

This is very strange. You seem to be following the best practices in your code. The only reason I can think of that you never get an OnBarUpdate() with BarsInProgress==1 is that there was a problem loading the data. Do you see any log messages related related to the AddVolumetric failing? Are you sure you have the data required for your test? Have you tried live testing or only historic? And if so, is the problem the same with live data?