It troubles me that no one has had an answer to this so far. I tried asking roughly the same question of the velocity-users list and was told that a new version of Velocity now does arithmetic with non-integer numbers, but two things make that problematic: first, I have limited access to the server to install software; second, I can't believe that no one in all of XWiki's lifetime has ever tried to do any date calculations, such as the difference of two dates, or adding/subtracting intervals. Isn't there an easier way to do this? All I want to do is decide whether something's a week old. brain[sic] -----Original Message----- From: THOMAS, BRIAN M (SBCSI) Sent: Friday, March 03, 2006 5:18 PM To: [email protected] Subject: [xwiki-users] Long arithmetic...? It seems that a Velocity #set directive fails when the RHS involves any arithmetic operation with long integers. Specifically, I just wanted to determine the difference between two dates, thus: #set ($age = $xwiki.currentDate.time - $obj.xWikiObject.getDateValue("donedate").time) I confirmed that I got credible results from both of the operands by printing them, and I could assign either of them to another variable name, but setting $age to the result of any arithmetic operation with any of them always gave "$age" as the formatted result. This shouldn't be this hard, should it? brain[sic]