[Zope] get properties in external methods

Hi, does anybody know how to access properties in External Methods? I want to get the properties and meta_type of objectId. the following script doesn't work. Any hints? -- many thanks for your replies, Elena (please answer directly to my adress so I get your reply sooner, thx) def main(self, objectId): objectType = objectId.meta_type objectSource = '' if objectType != 'folder': objectSource = objectId.read() <###### does this work with python scripts, too (for the source and parameters)? objectTitle = getattr(objectId, 'title') for prop in self.propertyIds(): if prop != 'title': propValue = getProperty(prop) propType = getPropertyType(prop) return