[Zope] newbie question: Redirect from Python?

I want the user to be sent to a particular URL after calling the product's manage_add method. How can I do that? The URL I want is REQUEST['URL3']. I've tried RESPONSE.redirect(REQUEST['URL3']) but that's not it - the RESPONSE doesn't seem to exist here. -- ................. paul winkler .................. slinkP arts: music, sound, illustration, design, etc. web page: http://www.slinkp.com A member of ARMS: http://www.reacharms.com