Hey Toni, What's the recommended comment type now for DRL files? Also, it looks like Java Generics (even when not used in a where clause) are breaking DRL compilation since 5.3. E.g.: when C$ : Cheese (type == "Stilton") then Set<Ingredient> ingredients = C$.getIngredients(); end Where Cheese.getIngredients() returns the Java Generic collection: Set<Ingredient>. I haven't seen a bug logged on this in your JIRA, but I may have note searched deeply enough. best wishes, Andrew On Feb 1, 2012, at 5:44 AM, Toni Rikkola wrote: