[Zope] Add an object and subobjects in a single pass?

[VanL]

Hello,

I'm working with the Kube Product, and I have a situation where I would 
like to add a Kube (for those who are not familiar with it, it is 
basically a folder) and then add another Kube within the first -- but do 
it during a single pass.

Currently, I have the following:

(foo and bar are specializations of Kube -- they have the same 
interface, tho)

id1, id2 = 'f', 'b'

f = foo()
f.id = id1
f.title = 'Foo Object'
self._setObject(id1, f)
f = self._getOb(id1)

b = bar()
b.id = id2
b.title = 'Bar Object'
self._setObject(id2, b)
b = self._getOb(id2)

 From here I have tried

f.bar = b,

f._setObject('bar', b)

Both of these create a bar object that is a subobject of foo.  I can go to

http://host/foo/bar and I see bar.  However, when I look at foo, I can't 
see bar as a subobject (like a folder would normally show a subobject.) 
 Also, I add properties to bar, but I can't seem to get at them anywhere 
through the management interface.

Any help?

Thanks,

VL