GetStringUpperCase

The   NWScript command returns a near-copy of a string in which all alphabetic characters are in upper case (capital letters). If an error is encountered, a zero-length string, "", is returned. (However, getting an error is a challenge; in practice, this command returns an empty string only when the input is an empty string.)

Definition
The original string is not changed, but the return value can be assigned to the variable used as the parameter. For example: sText = GetStringUpperCase(sText);