VALIDATION

Summary:

I'd like to require a user to enter a property value in upper case… or automatically change the value entered to upper case

Content (please ensure you mask any confidential information):

Upon task creation, one of the required fields is State (cstate). We need this property to be entered as a 2-character upper case value when the user completes the Add Activity screen. I'd like to either display a validation message to the user when anything other than upper case is entered, or, even better, just automatically change the value to upper case. Can this be accomplished using either Defaul Value or Validation? I've tried varying versions of "UPPER" in both, but I'm getting an error that the function "UPPER" does not exist.