OnStateChange error

[chrisca]

Hello,

I am using a strategy with Renko bar type and a 3rd party indicator. When I add a trail stop and have it set to equal the price of the 3rd party indicator, I get the following error when enabling:

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

When SetTrailStop is removed from the strategy, it compiles, enables, and runs fine.

Any thoughts will be appreciated.
Chris

[NinjaTrader_ChelseaB]

Hello Chris,

The error indicates that a variable with a null value was called.

What is the line of code causing the error?

[chrisca]

This is it:

else if (State == State.Configure)
{
SetTrailStop(@"BUY1", CalculationMode.Price, TSSuperTrend1.UpTrend[0], false);
AddRenko("ES 03-18", 3, Data.MarketDataType.Last);
SetTrailStop(@"SELL1", CalculationMode.Price, TSSuperTrend1.DownTrend[0], false);
}
else if (State == State.DataLoaded)

I have moved them around with no luck.

Chris

[NinjaTrader_ChelseaB]

Hello Chris,

You cannot call an indicator in State.Configure as the data has not yet loaded.

Remove TSSuperTrend1.UpTrend[0].

If you are planning to use a price from an indicator for the stop loss, you should be setting this in OnBarUpdate.

[chrisca]

Thanks Chelsea,

So I moved SetTrailStop line to OnBarUpdate area, and it complies and enables fine. The issue now however, is that the trail stop doesnt seem to be working at all. Any ideas?

Thanks,
Chris

[NinjaTrader_ChelseaB]

Hello Chris,

No stop loss order is being placed at all?

What is the signal name of the entry order?

Is the SetTrailStop set before the entry is placed?

[chrisca]

Chelsea,

Not at all. My signal for entry long is "BUY1" and signal for short entry is "SELL1". They are placed after Entry order. I think the issue is that I am trying to set the trail stop to equal the uptrend/downtrend plot (green/red dash marks), but don't quite know how. Are you familiar with this and could possibly help me with this? I have attached a screen shot for better explanation of red/green dash marks.

Thanks,
Chris

[NinjaTrader_ChelseaB]

Hello Chris,

Set the trail stop to a valid price before placing the order.

Use prints to ensure that the price you are using for a long position is less than the bid or for a short position is greater than the ask.


Below is a link to an example that uses SetStopLoss(), but this would work the same as SetTrailStop().

https://ninjatrader.com/support/forum/showthread.php?p=521345#post521345