Xcontrol in Subpanel

I have an Xcontrol that works great when I run my VI by clicking the run arrow; however, the Xcontrol does not seem to register events when the VI is dynamically run in a subpanel.  FYI, all other functionality of the dynamically run VI works fine (only the Xcontrol fails to work properly).  I need help understanding why and finding a good solution.

Thanks!