I have a date field in my query and I want to use a parameter criteria. When I enter [ ] and run the query, it works fine when I enter an actual date. But if I try to enter "Is Null" or "Is Not Null", it doesn't return any records. Without the parameter in criteria, if I enter "Is Null" or "Is Not Null" it works fine. Please tell me what I need to do to make the parameter criteria work with null criteria. Thanks a lot.