I'm new to this site and want to say thanks to Mile-O (and tehNellie) for sharing their info re: the UCase function!
As a first time Access user, I created a table with individual first name/last name fields, but also wanted to concactenate them in an additional field of the same table. The concactenated field would be used later in a combo box that we would utilize as a "look-up" field of a form (lastname, firstname). To get the combo box results to appear in upper case text, I used the > format symbol in the design view of the table. It's worked perfectly for over a year, but now suddenly the concactenated names no longer appear in my combo box dropdown list. Even more confusing, I can logon to other computers and see the list just fine! When I finally removed the > format symbol from the table, everything worked fine, except now the text in my combo box dropdown list was no longer all upper case.
When I Googled the problem, I found your sight and located the UCase fuction! Since I had already used an UPDATE query to concactenate my individual fields, I simply included the new function and everything is as it should be...once again! Thanks for your great feedback!