manage_editProperties causes ALL properties on the propertysheet to be updated. If you want to control which properties get updated, use manage_changeProperties: eg. manage_changeProperties({'field_id' : 'field_value', 'field_id2' : 'field_value2'}) HTH Jonathan ----- Original Message ----- From: David Sumner To: zope@zope.org Sent: January 18, 2004 2:52 PM Subject: [Zope] DateTime and propertysheets Hello, I have created a Product with a ZClass. The ZClass has a propertysheet with a date property. When creating an instance of this product I try to call the manage_editProperties method and modify the value of another non date property and I receive an Invalid Date-Time String. Now, I am not attempting to modify a date property but am still getting this error whenever I tried to change a value on the same propertysheet as a date property. If I try to change the date value to a valid date time value, I still receive the same error. Thanks ------------------------------------------------------------------------------ _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )