Erro calling Instrument.FullName from State.Configure

[guillembm]

Hello,

I am trying to retrieve the value of Instrument.FullName from State.Configure and assign it to a variable during an optimization.

I can do it from the first pass but I get the error "Strategy 'MyOptimizer': Error on calling 'OnStateChange' method: Object reference not set to an instance of an object." in the following passes.

What is the problem?

[NinjaTrader_ChelseaB]

Hello guillembm,

You cannot use anything related to a DataSeries until State.DataLoaded.

From the help guide:
"Warning: The properties in this class should NOT be accessed within the OnStateChange() method before the State has reached State.DataLoaded"

https://ninjatrader.com/support/helpGuides/nt8/instrument.htm

Move the code to State.DataLoaded or OnBarUpdate().