[rules-users] List of valid values

I am developing a set of rules around validating messages in a B2B messaging environment and I would like to have my rules builders have control of the valid set of values for a particular field preferably without creating a new fact model. Since I am working in a B2B messaging world, I can see how to define an enumeration in an XSD and how to access those in the Guvnor to create a dropdown menu. I can also see how to define a set of enumeration values in the Guvnor which uses a hardcoded set of values to define the legal values for populating a dropdown menu. I can even see how to have the dropdown menu populated from a Java class. The class appears to have to be on the classpath of the application... It is not good enough to make it be part of the jar that contains the fact model. This means that the set of legal values is part of the "technical" domain rather than the "business" domain. I guess I can always have the class load the values from a database, properties file or some such but that means a separate place to store the values. However, I feel that I would like to have the set of valid values be part of what is accessible and configurable through the Guvnor. Is there somewhere I can store the set as an artefact in Guvnor and be accessible at runtime for me to do the check with? Or should I just code the values into a set in a function? Chris Selwyn