Add a message box to a query

[brucewalker]

I have a parameter query which opens a form. The parameter asks you to enter a start date and an end date. I want to add a message box which pops up and will say you must enter a date if the user clicks ok without entering the requested date. How can I do this? Thanks.

 

[KenHigg]

You're going to have to bite the bullet and do this from a form/button. The query pop-up prompt thing is really limited...