[rules-users] Time constrained rules

Hi all, I need a set of rules to fire on time-based criteria. I have a 'Clock' object in working memory, along with an unknown number of 'TestObject's, each of which can report its 'age'. At some interval, I modify the Clock object in working memory, and then fire the rules. As a start (which I'm certain shouldn't work anyway), I'm playing around with a rule like this: rule "remove objects older than 2 seconds" when Clock() $to : TestObject( ageInMillis > 2000 ) then System.out.println(new java.util.Date() + " ========= Retracting " + $to); retract($to); end It appears that the RHS is never executed, presumably because TestObjects were not modified. (I'm new to JBossRules, so I'm unclear on that ) Alternatively, I could just remove the Clock() constraint and iterate an external collection of TestObject's, marking each object as modified. Just looking for the best way here... Thanks, -jason