[jitter] Parent+Child Rotations

Hi there
I'm trying to make parent-child control, while translate and rotate 2 objects in 3D space. I've got in trouble with Z 
axiz rotations. It seems that X axis belongs to the object and Y and Z are global...
Here is a demo patch showing the problem.
I can not control Y and Z rotations of "child" object when "parent" rotates. And I would be happy to be able to...
Any idea or reference will be appriciated.
thanks
Alex
--
soma!=sema