Hi Scott,
thank you for posting your solution! I will create a document later outlining the requirements of a conjunction and disjunction operator for fis files. Strictly speaking, you only need such operators if the rules contain “and” or “or” connectors, which is why those properties are empty in SimpleDimmer. However, I think I recall that Matlab also requires valid conjunction and disjunction operators regardless of the presence of connectors. Anyway, good you made it work!