[rules-users] Rule package change listener

Hi All, I'm using Guvnor to create the business rules and using RuleAgent to retrieve the rule package from the URL generated by Guvnor. Is there a way for the RuleAgent to get notified when the rule package is modified? Basically what I'm looking for is a listener mechanism so that the RuleAgent would only update or retrieve the package when the package is changed. Thanks, Jing