Query - How do we create a Collection of bills where both cleared and uncleared bills should be gathered? Solution - Create two collections of Type : Bill and enable the attribute Cleared in one collection and disable the attribute Cleared in another collection. Subsequently, create a Union of both these Collections. Example:- [Collection: List of Cleared Bills] Type : Bill Cleared : Yes [Collection: List of UnCleared Bills] Type : Bill Cleared : No [Collection: List of Bills] Collection : List of Cleared Bills, List of UnCleared Bills