$value : Value( $value : value, // other restrictions ) $object : MyObject( $value not memberOf valueList ) GreG On Nov 1, 2010, at 9:55, Tina Vießmann <tviessmann(a)stud.hs-bremen.de&gt; wrote: Is it possible to write the following conditions without using eval? $object : MyObject ( $valueList : valueList ) // of type List $ value : Value ( // other restrictions && eval( !($valueList.contains($value)) ) ) Thank you :) Tina _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users