[rules-users] Condition syntax to access Map

I'm struggling with the syntax to access a mapped object - hoping that someone can help with this.. I have the following condition in a rule: $a : Answer(getAnswerData().get(0).getValue_str() == "Valves") Answer is a pojo where answerData is a Map<Integer, AnswerData> object. AnswerData is also a pojo and has a String variable value_str. Rule containing this condition complies but I get the following error when I fireAllRules [Error: null pointer or function not found: getValue_str] [Near : {... getAnswerData().get(0).getValu ....}] ^ [Line: 1, Column: 1] org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:997) The method getValue_str() does exist in AnswerData as does getAnswerData() in Answer and there are not any null values. I'm assuming that autoboxing will correctly interpret .get(0) as an Integer object. Any ideas?? -- View this message in context: http://drools.46999.n3.nabble.com/Condition-syntax-to-access-Map-tp320442... Sent from the Drools: User forum mailing list archive at Nabble.com.