How to make Ultimate Facebook pull user's birthday


I wonder - how do I set the Ultimate Facebook plugin to save user's birthday, location etc to WP's database? I see that this should be done via the "Map WordPress profile to Facebook" section, but can't figure out from where I pull the desired variable names.

I've checked, the name and email, along with profile picture, do get saved in WP database when a user logs in via Facebook.

Thank you!