Problem with Actor with hide-able parts

I am trying to make an actor with several layers of clothing that I can .hide() .show() as needed.
I am using Blender 2.66 and Yabee to export my actor but I cannot .find() and of its parts.
I tried to use optchar to –flag the parts but it fails to make them find-able.
I’ve tried unchecking ‘merge actor’ but then none of the clothes show up at all, even after using optchar.
How can set a part of an actor to be find-able so I can hide or show it?

If you disable ‘merge actor’ option, then exported file should contain several actors. You can load it by this way:

I plan to change this behaviour, but for the time it’s work only by this way.