How can change nickname into my first name?

How can i unable to use my nickname instead of using my first name in my player? announcers always says my nickname during start of the game shoot a ball shooting free-throws during the game play. my player name is paul lee. PAUL and Lee are in the database but how can edit my nickname into my first name?

There's no way use your own nickname even in 2k16 the nickname default is freq... you can't create your or use your own nickname