Hi All, I'm trying to do a simple example of loading enums programmatically following the Drools Guvnor Docuemntation. I'm on Drools Guvnor 5, Java 1.6 running under Jboss. I'm trying to define this 'data enumeration/drop down list' package opensource.test; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class SampleDataSource2 { public Map<String, List<String>> loadData() { Map<String, List<String>> data = new HashMap<String,List<String>>(); List<String> d = new ArrayList<String>(); d.add("A"); d.add("B"); d.add("C"); d.add("D"); d.add("E"); data.put("Employee.band", d); return data; } } The jar containing the SampleDataSource2 has been defined as a model within Guvnor and I defined another declarative model Employee with fields name,band,rating. Here's what I put in the 'Data enumeration' text window Employee.band =(new SampleDataSource2()).loadData() When validating the Data enumeration from Guvnor, I get the following error: Unable to load enumeration data. unable to resolve class: DataEnumSource Error type: org.mvel.CompileException Any help will be highly appreciated ... Thanks, Nilima =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you