[rules-users] Guvnor data enumeration issue

I am trying to use data enumerations and running into a problem. Following the Vehicle engineType/fuelType data enumeration example in the Guvnor manual, I created the following enumeration list and it works: 'Vehicle.engineType' : (new test.VehicleHelper()).getEngineTypes() 'Vehicle.fuelType[engineType]' : '(new test.VehicleHelper()).getFuelTypes("@{engineType}")' VehicleHelper: ------------ public class VehicleHelper { public List<String> getEngineTypes(){ List<String> engineTypes = new ArrayList<String>(); engineTypes.add("Petrol"); engineTypes.add("Diesel"); return engineTypes; } public List<String> getFuelTypes(String engineType){ List<String> fuelTypes = new ArrayList<String>(); if("Petrol".equalsIgnoreCase(engineType)){ fuelTypes.add("ULP"); fuelTypes.add("PULP"); } else if("Diesel".equalsIgnoreCase(engineType)){ fuelTypes.add("BIO"); fuelTypes.add("NORMAL"); } else{ fuelTypes.add("Default Fuel 1"); fuelTypes.add("Default Fuel 2"); } return fuelTypes; } } Above works as expected. Problem: I want to only have an enumeration on Vehicle.fuelType that depends on the value of engineType, without specifying an enumeration on engineType. So, I took out the first line in my enumeration list so that it is now: 'Vehicle.fuelType[engineType]' : '(new test.VehicleHelper()).getFuelTypes("@{engineType}")' But that does not work. When I create a rule, VehicleHelper.getFuelTypes does not get called and the dropdown for fuelType is not a list. How do I get this working? Thanks G. Patel ----------------------------------------- The information contained in this communication (including any attachments hereto) is confidential and is intended solely for the personal and confidential use of the individual or entity to whom it is addressed. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this communication in error and that any review, dissemination, copying, or unauthorized use of this information, or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. Thank you