IdentityManager to get role

I'm trying to use the IdentityManager class to get the role of the logged in user. At the very least the user name.

code snippet:
private var identifyManager:IdentityManager = IdentityManager.instance;
var name:String = identifyManager.credentials[0].userId;


The API keeps telling me IdentityManager.credentials doesn't exist. Is it possible to get any information out of the IdentityManager? Has anyone had any success with this?

Thanks in advance.