[Zope] PythonScript -> List item is out of range

Hi: I wrote this PythonScript: s1 = { 'a': 1, 'b': 0 } s2 = { 'a': s1['a'] and s1['b'] } return s2 and Zope does not accept this. Zope returns directly a list item is out of range... When I replace the 'and' by '+', then everything is ok! How to do ? --- "I suppose if we couldn't laugh at things that don't make sense, we couldn't react to a lot of life." -Hobbes --- Oliver Pabst .-------------------------. mailto:olpa@sybcom.de : : phone :+49 681 56600600 : project department : SYBCOM GmbH fax :+49 681 56600660 : : http://www.sybcom.de