ChangeNotification framework and Custom EO layout

Forgive me asking questions that may not so fit to this mailing list.=20

I found no help for quite long, of the challenges encountered.

David Neumann's ChangeNotification framework worked very well for most =
of apps untill i changed=20
my EO layout (indention shows the super-sub class relationship) below:

EOGenericRecord (from EOF)
     EObject                              // Shared =
logic/mechanism/utility/service for all my EO's)
           ModeledCustomRecord  // EOModeler generated class, for entity =
Person, the class is _Person.=20
                MyCustomRecord     // For entity Person, the class is =
Person (subclass of _Person)

>From development view point, EObject reduces lots duplicate efforts and =
make the code much easier to
manage. I still use WO4.5.1 ObjC so that without java reflection, =
EObject knows the type of my=20
MyCustomRecords class and instances and do the right things as I =
expected. I'm using EObject to make
the class evolution mechanism working.
    The seperation between ModeledCustomRecord  and MyCustomRecord makes =
model updates more
easier from developers' view point.

But ChangeNotification framework not work with the EO layout above. =
Could someone please give me=20
some hints so that I can get things fixed? Thanks for your time read =
this email.

Best regards,

YL