hi there, work on a zope 2.3 on suse linux 7.0 (<input type="text" name="irr_avg;integer" maxlength=5 width=5 value="">) the value checker brings the following result if the value is left empty '(') ---------------------------------- Zope Error Zope has encountered an error while publishing this resource. Error Type: AttributeError Error Value: 'None' object has no attribute '__class__' Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. -------------------------------------- or if the value is correct ('1') a part of the url is: &irr_avg%3Binteger=1 -------------------------------------- Zope Error Zope has encountered an error while publishing this resource. Error Type: Bad Request Error Value: ['irr_avg'] Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. --------------------------------------------- i think that needs bugfixing, unfortunately i'm not a python programmer thanks anyway olaf -- soli-con Engineering Zanger, Dipl.-Ing. (FH) Olaf Marc Zanger Lorrainestrasse 23, 3013 Bern / Switzerland fon:+41-31-332 9782, mob:+41-76-572 9782 mailto:olaf.zanger@soli-con.com, http://www.soli-con.com