Calling Custom Namespaces within Strategy

[Serac]

I've created my own set of indicators delineated within their own namespace. When I plot these indicators on a chart, everything works as expected. When I try to use them within a strategy, the strategy compiles, but then I get an error in the Log tab of NinjaTrader: "Error on calling 'OnStateChange' method: Object reference not set to an instance of an object". How do I use the namespace within OnStateChange?

This is what I'm doing. Up top, I am including the namespace:

#region Using declarations
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.Indicators;
using NinjaTrader.NinjaScript.DrawingTools;
using NinjaTrader.NinjaScript.Indicators.MyIndicators;
#endregion

Next I declare my indicator instance:

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

And here:

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{

// Initialisation snipped out

period = 8;

indy = myCustomIndicator(period);

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

This all compiles, but does not work - it errors out.

What should I do? Am I using the indicator incorrectly in OnStateChange?

Confession: I've been using NT 7, and have only started using NT 8 recently. This may be a NT 8 nuance that I don't yet understand.

Thanks!

[NinjaTrader_Jesse]

Hello Serac,

Thank you for the post.

One problem here is the state where you are creating the indicator, you would need to use State.DataLoaded or later for that.

I would suggest to use the strategy builder here to just generate the syntax, you can create a new strategy and then use the indicator in any condition then click view code. That will generate the correct syntax and placement for the code.

I look forward to being of further assistance.