New Post: How to get CustomPane instane from CustomUI and vice versa

I am playing around the COMAddin example.

I have a dropDown in custom ribbon and a few controls in custom pane. I want the dropDown onAction event update those controls in the custom pane, but I don't know how.

Tried TaskPane[0].Pane but seems wrong direction.

And vice versa, from msdn > Globals.Ribbons.Ribbon1.dropDown
In NetOffice, how can I access the dropDown from custom pane? GlobalHelperModules?

Please help. Thanks.