Plot not Showing up

[swcooke]

This is a simple Indicator and the Plot seems to not show consistently. See screenshot attached:

namespace NinjaTrader.NinjaScript.Indicators
{
    public class PlotNotShowing : Indicator
    {

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description                = "Test Indicator";
                Name                    = "PlotNotShowing";
                Calculate                = Calculate.OnBarClose;
                DrawOnPricePanel        = false;
                IsOverlay                = false;
                DisplayInDataBox        = true;
                PaintPriceMarkers = true;
                AddPlot(new Stroke(Brushes.DarkCyan,2), PlotStyle.Bar,"MyVolume");
            }
        }
        protected override void OnBarUpdate()
        {
            MyVolume[0] = Volume[0];
        }

        #region Properties
        [Browsable(false)]
        [XmlIgnore]
        public Series<double> MyVolume
        {
            get { return Values[0]; }
        }
        #endregion

    }
}

[swcooke]

Never mind. I didn't have BarsRequiredToPlot set and didn't know it defaulted to 20 :-). Setting it to 1 did the trick!