[Zope] using DOM from within Zope

Maybe this is the wrong way or something, but how can I use xml.dom.minidom (or other module in its entirety) from within Zope? I've tried various stuff in the "MyScriptModules" Product. This same approach seems to work with the "re" module. Example: Products/MyScriptModules/__init__.py: from Products.PythonScripts.Utility import allow_module ... allow_module("xml") allow_module("xml.dom") allow_module("xml.dom.minidom") Python Script "inside" Zope: import xml.dom.minidom xmlstring="<a><b>texttextext</b><c>hejhejhej</c></a>" domtree=xml.dom.minidom.parseString(xmlstring) return domtree.toxml() Result: Username/Password question. "Error Type: Unauthorized Error Value: You are not allowed to access 'toxml' in this context"