[Zope] manage_upload an image object (WAS: Re: Change a ZClass's instance's image) instance's image)

<dtml-call "REQUEST.set('data',default.document_src(REQUEST,RESPONSE))"> <dtml-call "manage_addDTMLDocument('default','',data)">

That sort of works. The only problem is, Image doesn't seem to have a document_src method. Anyone knows how to use the manage_upload method to "upload" an image that's already in the object database? Kam