My database contains information on many different power plants. I have created a form to retrieve data about a specific plant but there is more information than I can get onto a single page. So I added a command button to the form to retrieve a subset of data using a query. Clicking the command button is supposed run a macro that activates a query with the plant ID number as a condition to recall the specific subset. The query works fine by itself (if I enter the plant ID manually as parameter). When I click on the command button, nothing happens - I do not even get an error message to suggest where to start looking. Anybody have any suggestions? Thanks.