dtml-in provides some variables that may be enough. If not move it to a Python script, do the work there and do simple presentation from dtml. From the online help: Summary Variables These variable summarize information about numeric item variables. To use these variable you must loop over objects (like database query results) that have numeric variables. total-variable The total of all occurrences of an item variable. count-variable The number of occurrences of an item variable. etc... -- Andy McKay Agmweb Consulting http://www.agmweb.ca ----- Original Message ----- From: "Michael Fox" <Michael@CenturySoftware.com.au> To: <zope@zope.org> Sent: Monday, September 16, 2002 6:04 PM Subject: [Zope] Dynamic Sum Hi *, I have a dtml-in which lists both quantity and cost of items in my table. I am generating the total for each item row like so - <dtml-var expr="cost * qty" fmt="dollars-and-cents-with-commas"> What would be the practical approach to calculating the sum of all totals for each item here? Regards, Michael Fox Web Analyst/Programmer Century Software Ph: +612 9460 1422 Fax: +612 9460 3098 Email: michael@centurysoftware.com.au This E-mail from Century Software Pty Ltd expresses the views of the sender and not necessarily the views of the Company. The E-mail and any files transmitted with it are confidential to the intended recipient at the E-mail address to which it has been addressed. The E-mail may not be disclosed or used by any other than the addressee, nor may it be copied in any way. If you are not the intended recipient please contact the sender as soon as possible and delete any copies of this message. Please note that although this E-mail has been checked, we cannot accept any responsibility for any transmitted viruses. It is therefore your responsibility to virus scan attachments (if any). _______________________________________________ Zope maillist - Zope@zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )