Ok, shame on me it was too easy than I didn't see it. My fault was a bad regular expression, this syntax is working fine. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Romain Van der Keilen Sent: mardi 25 août 2009 11:14 To: rules-users(a)lists.jboss.org Subject: [rules-users] DROOLS 4.0.7 Regular expression Hi there, I'm looking how to use regular expression with Drools 4. I've already found some things but they don't work. Here is an example I want to do, considering all getters and setters are properly written: Class House + private Window myWindow + private Phone myPhone Class Door + private String name Class Phone + private String phoneNumber Let's say in my country phone numbers are the following type: xx/xxx.xx.xx If I give my house to the session, how can I check if the phone is correct? I've tryied this but that's not working: rule "Check phone" when h : House ( phone: phone ); eval ( phone != null ); Phone ( phoneNumber matches "^ -regex- $"); then System.out.println("my phone is correct"); End Thanks for help, Romain Van der Keilen _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users