Multi-window addon button not working

[skipper-flatiron-18]

Hi, I'm a newbie to ninjascript and I'm learning addon development.

My goal is really simple - Two chart windows with chart trader. Each window has a button. When the button is clicked, it should print the respective window's selected instrument.

Please see attached screenshot.

But for some reason when one window initializes, it overrides all the variables in the addonBase subclass and both buttons print the same instrumentName. How do I fix this?

Please see attached addon code.

[NinjaTrader_Emily]

Hello skipper-flatiron-18,

Thank you for your post.

The prints in your screenshot don't seem to match up with the script you provided; I do not see where in your script you are generating the prints that say "OnClick - missing instrument name MNQ" and "Onclick - my symbol is MES"
That said, I believe the underlying issue is that there is only one variable here, instrumentName, that is changing any time OnInstrumentChanged() is fired from any instrumentSelector, which would be the selector from the active chart window. To clarify, are you seeing that both buttons print the same instrument that was last selected from either instrument selector?

For your purposes, it may make more sense to create the button in the chart trader from an indicator script that will be associated with the specific chart window that the indicator is applied to. That way, the indicator could save changes made to that specific chart trader's instrument selector and print the value from that window only. You would need to add the indicator to each chart or use a chart template that automatically applies the indicator to a new chart. We have examples of creating WFP modifications from an indicator here:

https://ninjatrader.com/support/helpGuides/nt8/creating-chart-wpf-(ui)-modifi.htm

Please let us know if we may be of further assistance.

[skipper-flatiron-18]

Thank you. I'm not familiar with WPF or Ninjascript. I'll check out the link you provided.