[Zope] Zope scripting and ownership

Hi, Is there any way for a Python script to control who is going to be the owner of a file it generate? My testing show that a new object created using manage_X method is always owned by the authenticated person, even if it is created by a proxy script and the authenticated person normally have no right to create a new object in that folder. Is it possible to write a script that change the owner at the time when an object is created, or after the object is created, say if the script is a manager proxy? Regards, Isaac.