If you create a form description manually then use the database documenter, you will see the Description property listed
However, using VBA, the Description property has to be created first before it can be populated.
Although I've never tried to do this, Allen Browne has code that I believe should do what you want.
Seethe SetPropertyDAO function at
http://allenbrowne.com/func-DAO.html#SetPropertyDAO
Alternatively, see if you can adapt the code from this old AWF thread - post #4 contains code that may help
What I am trying to do is create a VBA Function which takes a form as a parameter and then sets certain properties on that form, which Im thinking could either be run on the Form Open event or when actually opening the form (so creating another function which performs the property updates and...
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Let us know how you get on