Using QuantumCSI in and Strategy - Object reference not ser ERROR

[joevieira]

Hi,

I am trying to incorporate the third party QuantumCSI on my strategy. I used the Strategy Builder to see how to use the indicator. It compiles fine; however, when I try to run a backtest thru the Strategy Analyser, I get the following error:

Indicator 'QuantumCSI". Error on calling "OnStageChange" method. Object reference not set to an instance of an object

I appreciate if you could help me to resolve this error.

Thanks,



The following is the sample code

//This namespace holds Strategies in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.Strategies
{
public class STRR : Strategy
{
private QuantumCSI QuantumCSI1;

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = @"Enter the description for your new custom Strategy here.";
Name = "STRR";
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 = 20;
// Disable this property for performance gains in Strategy Analyzer optimizations
// See the Help Guide for additional information
IsInstantiatedOnEachOptimizationIteration = true;
}
else if (State == State.Configure)
{
QuantumCSI1 = QuantumCSI(14, 60, true, true, true, true, true, true, true, true);
}
}

protected override void OnBarUpdate()
{
if (CurrentBars[0] < 1)
return;

// Set 1
if (QuantumCSI1.USD[0] > QuantumCSI1.USD[1])
{
EnterLong(Convert.ToInt32(DefaultQuantity), "");
}

}
}
}

[NinjaTrader_JessicaP]

Hello joevieira and thank you for your question.

I noticed that you were checking to see if you had at least one bar on your chart. However I also noticed that you were using a 14 period indicator. Please ensure you have at least 14 bars available. If this doesn't resolve your query or there are other ways we could help please let us know.

[joevieira]

Hi Jessica,

I made a change to ensure I have at least 14 bars (if(CurrentBars[0] < 15) return). However, I am still getting the same error. Any help would be appreciated.

Thanks,

Joe

[NinjaTrader_JessicaP]

Thank you for this additional information. I am not familiar with the third party tool we are wrapping, and so I can only provide limited support from here. However, two other things we can attempt :

• Ensure that your CurrentBar is greater than QuantumCSI1.BarsRequiredToTrade
• Ensure that your CurrentBar is greater than 60 (the 2nd argument into your indicator)

If neither of these approaches work, your strategy is simple enough that the third party add on vendor should be able to work with you if you can contact them directly. If they have any questions we could answer, we can be reached at platformsupport[at]ninjatrader[dot]com, referencing Attn:NinjaTrader_JessicaP and 1614339 in the subject line.