Javascript to pull User Name in Reach 360

Hello! I am wondering if anyone has figured out the javascript to pull the users name from Reach 360. 

I set the variable to firstName in Articulate 360 and this is the javascript I put in. Any help is appreciated!

var player = GetPlayer();

function findLMSAPI(win) {
    if (win.hasOwnProperty("GetStudentID")) return win;
    else if (win.parent == win) return null;
    else return findLMSAPI(win.parent);
}

var lmsAPI = findLMSAPI(this);
var myName = lmsAPI.GetStudentName();
var array = myName.split(',');
var firstName = array[1].trim(); 
var lastName = array[0].trim(); 


player.SetVar("username", firstName);