IVersionEvents - not firing

Hi,

We have a senario to catch the VersionChange event in ArcMap, to achieve this we try to implement the IVersionEvents
, IWorkspaceExtension2 and IWorkspaceExtensionControl interface and registered with GeodatabaseWorkspaceExtensions component category.

Even tried with a propritery class to Listen the events (IVersionEvents_Event)

No success, Kindly help us to catch the IVersionEvents in ArcMap.

Thanks & Regards,
Adhi.D