Hi I am having trouble performing date calculations in Zope. I have a variable called dob which returns a date of birth from MySQL Ie. Date of Birth=<dtml-var dob> works fine I would like to be able to list the current age in years and months I can get a years calculation with the following line Age in years = <dtml-var expr="ZopeTime().year()-dob.year()"> A similar line works using months Months = <dtml-var expr="ZopeTime().month()-dob.month()"> I don't know how to do the month above when say you are in month 1 and you subtract month 12 Also, how can the results be placed in a form. Eg <INPUT TYPE="TEXT" NAME="AgeYears" value="0"> <INPUT TYPE="TEXT" NAME="AgeMonths" value="0"> I tried putting the above dtml-var code in the value attributes without success. Thanks Greg