Strategy with custom indicator

[The_Wiz]

Hi

I'm trying to make a strategy based on a custom indicator. But I get an error when I run the strategy analyzer.

"Indicator "CustomIndicator": Error on calling 'OnStateChange' method: Object reference not set to an instance of an object."

The strategy analyzer gets to the piece of code I have highlighted in bold.

I have a piece of my code and hope that someone can help me.

#region Variables
private int upSize = 7;
private UpStyle upType = UpStyle.Standard;
private int dtbStrength = 15;
private Series<double> upTrend;
private CustomIndicator cusInd;
#endregion


protected override void OnStateChange()
{

if (State == State.SetDefaults)
{
Description = @"High volume with hammer in downwaves or shooting star in upwaves.";
Name = "ReversalVolumeCandle";
Calculate = Calculate.OnBarClose;
EntriesPerDirection = 1;
EntryHandling = EntryHandling.AllEntries
IsExitOnSessionCloseStrategy = true;
ExitOnSessionCloseSeconds = 30;
IsFillLimitOnTouch = false;
MaximumBarsLookBack = MaximumBarsLookBack.TwoHundredFiftySix;
OrderFillResolution = OrderFillResolution.Standard;
Slippage = 0;
StartBehavior = StartBehavior.WaitUntilFlat;
TimeInForce = TimeInForce.Gtc;
TraceOrders = false;
RealtimeErrorHandling = RealtimeErrorHandling.StopCancelClose;
StopTargetHandling = StopTargetHandling.PerEntryExecution;
BarsRequiredToTrade = 0;
IsInstantiatedOnEachOptimizationIteration = true;

}
else if (State == State.Configure)
{

cusInd = CustomIndicator(UpStyle.Standard, 7, 15, false, true, true);

AddChartIndicator(cusInd);
}
}

[NinjaTrader_AlanP]

Hello The_Wiz,

Thank you for writing in.

Without the code I’m unable to test on my end. Would you upload a copy of CustomIndicator so I can look into what the issue may be?

To export a NinjaScript from NinjaTrader 8 do the following:

From the Control Center window select Tools -> Export -> NinjaScript...
Click Add>Select the indicator>OK>Export.
Then from the forum locate that file you saved, usually under My Docs>NT8>Bin>Custom>Select the downloaded .zip file.

I look forward to your reply.

[The_Wiz]

I've got it working now. Thanks