In what occasions can be "TickSize" empty?

[ttodua]

In some rare occasions, inside OnRender, we get catch exception

"Index was outside the bounds of the array."

at NinjaTrader.NinjaScript.NinjaScriptBase.get_TickSize()
at NinjaTrader.NinjaScript.Indicators.AMS.AMS_DeltaPrint.OnRender(ChartControl chartControl, ChartScale chartScale)

How it's possible, or under what circumtances it's possible, that TickSize fired such issue?

[NinjaTrader_Kate]

Hello TazoTodua,

Thank you for your note.

Are you able to supply a reduced version of a script that triggers this error?

Also, it's generally not a good idea to use variables that are tied to OnBarUpdate() in OnRender(); in general many variables in the script relate to it processing OnBarUpdate. I'd be interested to see where you're using TickSize in OnRender.

Thanks in advance; I look forward to assisting you further.

[habibalex]

I also occasionally get this error. I am triggering a function that runs from a button press on the toolbar. Is there another method to use to get the TickSize?

[NinjaTrader_Kate]

Hello habibalex,

Thank you for your reply.

Can you supply a working example script that reproduces the error along with steps to reproduce? If this is being triggered by a button press on the toolbar, does using a dispatcher help?

https://ninjatrader.com/support/helpGuides/nt8/multi-threading.htm?zoom_highlightsub=dispatcher

Thanks in advance; I look forward to assisting you further.

[ttodua]

The only reliable way might be to assign TickSize to the private field of class, and use that field, instead of TickSize.