How do you want to display the data? Do you want it to appear in a report, form or subform?
For a report, for example, base the report on a stored query. Then in the criteria line for EnvironmentID add something like:
[Forms]![frmMyFormName].[cboMyEnvironmentCombo]
You can check that a value has been submitted on the On Click event of the button that launches the report or form, and on a report, you can add a On No Data event, and check for data on the On Load event of the form etc.
At least that is how most top Access developers do it. =
Did that help?
mmcdonal
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