Error on calling OnBarUpdate, Index was outside the bounds of the array

[westofpluto]

I have a custom indicator where I have two properties. I only want to plot one of them - the default Series at index 0, but I want a second Series (at index 1) that would be available to a Strategy that uses this indicator.

My properties are defined like this:

#region Properties

[Browsable(false)]
[XmlIgnore()]
public Series<double> PendingCount
{
    get { return Values[1]; }
}

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

When I add my indicator to a chart, it has no problem setting the default data series TrendMode at current bar: TrendMode[0] = 0 for example
But when I try to set PendingCount[0] I get an error message in runtime: Error on calling OnBarUpdate, Index was outside the bounds of the array

Note that in OnStateChange if State == State.SetDefaults I call only one AddPlot function:

AddPlot(Brushes.DarkCyan, "TrendMode");

since I only want to see TrendMode plotted, not PendingCount. But for some reason, PendingCount doesn't seem to get allocated.

How do I fix this?

[NinjaTrader_BrandonH]

Hello westofpluto,

Thank you for your post.

The PendingCount property is calling get { return Values[1]; } and Values[ ] holds an array of Series<double> objects associated with plots. Since PendingCount is not being plotted and you are trying to access objects associated with plots, you are seeing an error when calling PendingCount. In order to expose indicator values that are not plots, you could create a Series<double> variable that stores information followed by accessing and expose that variable in the PendingCount property.

Please review the SampleBoolSeries indicator example that demonstrates how to expose indicator values that are not plots - https://ninjatrader.com/support/help...alues_that.htm

Also, here are help guide links for more information about Values [ ] and AddPlot.

Values[ ] - https://ninjatrader.com/de/support/h...t8/?values.htm

AddPlot - https://ninjatrader.com/support/help...8/?addplot.htm

Let us know if we may assist further.