Hi Davide, Sorry but any idea or point me to the rt direction on how to add custom operator in Guvnor? Thanks Matt'M -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-Custom-operator-problem-Not-finding-it-tp4028490p4028500.html Sent from the Drools: User forum mailing list archive at Nabble.com.