UPPER Function
Returns a string that has been converted to uppercase.
UPPER(expression)
Arguments
expression String - The string argument is any valid string expression.
Remarks
Only lowercase letters are converted to uppercase; all uppercase letters and non-letter characters remain unchanged.
Example
The following example uses the UPPER function to return an uppercase version of a string:
Dim value as String
value= UPPER("Hello World") // Returns "HELLO WORLD".