Hi, I just started using pluggable brains. The first thing I observed is that changes to the brain class are only seen in Zope after a restart of Zope. This differs to the behaviour of external methods. For newbies this can be quite irritating. But now to my question: How can I add a data attribute to my brain? Whenever I try to say self.attr=42 in a method of the brain class I get an Attribute Error. I can use a construct like self.__dict__['attr']=42. This seems to work. But is it the right way? Thank you for your help! -- connection reset by Peer _______________________________________________________________________ Dr. Peer Griebel Tel. +49 7581 4831 23 Geschäftsführer Fax. +49 7581 4831 11 Knoll Informationssysteme GmbH http://www.knoll-is.de Dreiköniggasse 17 mailto:peer@knoll-is.de 88348 Saulgau privat: mailto:peer.griebel@gmx.de