It did not work and when I attempted to go back into the Presentation Rule to fix the problem it gives me this error: "Invalid specification of the attribute XYZ in expression XYZ IS DEFINED".
What exactly does the rule look like?
Also nows a good time for me to ask. Can I place a Presentation Rule on something other than selection of choices? For example, in this case I want the rule to be a referenced attribute that IS DEFINED to be one style and NOT DEFINED to be another?
Not sure if I correctly understand the question, but, yes, you can define presentation rules not only on a list of choices, but also on a list of reference attributes on a form of some object. Go to the Presentation dialog of a reference attribute and click on "Item Rules"
You can also define rules for items returned by a query - click on the "Item Rules" button on the query editor in the Configuration Tool