hello. I have the following 2 classes: public class ClassWithPayload { private String key; private Object payload; // getters setters etc ommitted } public class PayloadClass { public String someProp; //getters setters etc ommitted } and im trying to get the following rule to compile: rule "Naive Payload Access" when $container : ClassWithPayload(key == "someKey", (payload != null && payload.someProp == "someValue")) then System.err.println("boom"); end which results in the following error: java.lang.AssertionError: Unable to Analyse Expression payload.someProp: [Error: unable to resolve method using strict-mode: java.lang.Object.someProp()] [Near : {... payload.someProp ....}] is there some way for me to cast payload.someProp to the proper class ? (PayloadClass in this case). this is a simplification of a bigger migration issue from drools 5.1 to 5.4 so the payload property has to remain an Object in the general case. there's a casting syntax mentioned here (https://community.jboss.org/wiki/DroolsPatternLanguage) but i take it its not been implemented yet? (or maybe i just cant understand it properly?) i've tried this: rule "Naive Payload Access" when $container : ClassWithPayload(key == "someKey", (payload != null && payload.#PayloadClass(someProp == "someValue"))) then System.err.println("boom"); end but it doesnt compile: java.lang.AssertionError: [8,51]: [ERR 101] Line 8:51 no viable alternative at input '(' in rule "Naive Payload Access" [0,0]: Parser returned a null Package and if i cant cast, how can i get this sort of rule to behave as it did in 5.1.1 ? thanks in advance for any assistance, Radai. -- View this message in context: http://drools.46999.n3.nabble.com/strict-mode-and-nested-object-property-... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users