public class SimpleType { private String state; private int count; } Insert facts with count == 1 and 2 and 99 and 100. The following rule compiles but does not fire: rule "show +98" when $st1: SimpleType($c1: count ) $st2: SimpleType( count == $st1.count + 98 ) // use $c1 + 98 and rule fires then System.out.println( "SimpleType: " + $st1.getCount() ); end -W