To get a name, simply use facebook.UserID expression.
Other step, to get a picture...
According to
developers.facebook.com/docs/reference/api/using-pictures
So this explains how to use API to get data, actually using facebook plugin it comes expression.
Make an event how you want to appear the facebook picture, then
Make an action
Load sprite URL:
"https://graph.facebook.com/"&facebook.UserID&"/picture"
I hope it helps you