Hi, I'm using drools-5.3.0.Beta1. I've following rule definition: import java.util.*; declare Student name : String @key subjectGradeMap : HashMap end rule "Subject grade points" dialect "mvel" when $u : Student() then $u.subjectGradeMap["CompSc"] += 100; System.out.println("Marks added"); end While executing RHS of above rule, fireAllRules() doesn't return, it hangs. Please help. Thanks, Neel _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users