Sorry,
I misunderstood your question..silly me :).
Just wire a property node to the ctrl ref you got from the event structure. This will give you access to what you are looking for, exactly like the custom probes do in fact...So you can reuse part of my previous post at least, by checking out the code in the custom probe..:).
Here's an example of what I am talking about.
Regards,
Cyril Bouton
Active LabVIEW Developper