Hello Manstis, I'm very happy with your answer, I will ask the question more accurately. I downloaded Drools-verifier and I'm doing the tests. Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Drools-verifier-tp4018296p4018308.html Sent from the Drools: User forum mailing list archive at Nabble.com.