I am pssing the category argument to the method below. The category variable is representing a propety of the Log object. My code below works ok when I get the property (1), but fails when I try to update that property (2) with a new value. I have tried to use _[category] but it disallowes the use of expression, understandably, as a keyword. Any ideas how I can get around this problem? Cheers, Espen <dtml-let (1)value="_.getattr(userFolder,username).Log.getProperty(category)" newvalue="value+......."> (2)<dtml-call "_.getattr(userFolder,username).Log.manage_changeProperties(category=newvalue)"> </dtml-let> _______________________________________________ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )