For some reason the character's name will not save when I hit the "finish" button, what could be wrong?

    var CharacterName : String = "Hello World";


function OnGUI(){
    CharacterCreater();    
    FinishedWithCharacter();
}

function CharacterCreater() {
     CharacterName = GUI.TextField (Rect (10, 10, 200, 20), CharacterName, 25);
}

function FinishedWithCharacter(){   

    if(GUI.Button(Rect(300,10,50,20), "Finish")){
       SaveGame();
    }
}

function SaveGame(){
    Debug.Log("Saving Game...");
    PlayerPrefs.SetString("PlayerName", CharacterName);
}