Interface Builder Plugin Image inspector property problem on load

Question

Hi.
i have created a custom NSView that displays an image.
i have created a property in Inspector view with binding to File's Owner.

Everything works fine in runtime image changing. But nothing is loaded when i save and load xib file.

here is the simplified code:

IBDocument *document = [IBDocument documentForObject:self];
[self->defaultImage release];
self->defaultImage = [document documentImageNamed:aImage];
[self->defaultImage setName:aImage];
[self->defaultImage retain];

The [document documentImageNamed:aImage] returns an NSImage in runtime, but when loading from file it return nil

though the NSImageWell works fine in runtime and when initialized from coder.

What i'm missing?

Thans.