CoreData transient attribute binding writes but doesn't read

FROM : Dave Fernandes
DATE : Mon Nov 19 01:43:01 2007

- I have an NSTextField bound to an NSObjectController's 
selection.myValue
- The NSObjectController is set up to use my derived NSManagedObject 
class.
- The myValue attribute of my entity is transient

When I type into the NSTextField, my managed object's setMyValue 
method gets called, as it should.

However, the myValue method doesn't get called. I thought the way MVC-
bindings worked was that there was supposed to be a round-trip -- 
call the setter, then the getter.

The only time the myValue method is called is when I am loading the 
window.

Is there any way to trouble-shoot this?

Dave