NOTE: I'm not a DROOL expert. Keeping this in mind, I'd say.... You'd need a separate rule which states: - if a cart does NOT contain TV, remove any free VCR from the cart if any Once you retract the 'TV' fact from WorkingMemory and refire the rules (or they will automatically refire?), this new rule will be activate and remove the free VCR from the cart. Just my 2c... Vlad -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Matt Johnston Sent: 13 February 2007 11:21 To: rules-users(a)lists.jboss.org Subject: [rules-users] Roll Back Rule / Rule Transactions? I am working on rules for an online shopping cart. Depending on the products in the cart, the customer may get certain discounts. If cart contains a TV, add a free VCR. I can apply these rules, but what about rolling them back? So in the example above, the rule automatically added a free VCR because the cart contained a TV. If the customer removes the TV, I need to roll back the VCR rule and also remove the VCR from the cart. Does anyone know how to do this? Is it possible? Matt Johnston Manager of Internet Content Publishing Group of America p: 615-468-6053 f: 615-468-6153 _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users