now i try import the model i declared in drl file use package. it works for me . maybe the model must have a package. -- View this message in context: http://drools.46999.n3.nabble.com/calling-function-defined-in-drl-file-from-ruleflow-tp3525538p3532717.html Sent from the Drools: User forum mailing list archive at Nabble.com.