Syncing FB with Microsoft Account ?

[SGoyal]

I am using facebook thru my gmail id.
i want birthdays of my contacts on facebook to show in calender app of windows phone.
It doesn't show any birthdays i calender.
I have heard i need to sync my FB Account with MSA. Please tell how to do it.
Or provide a alternative

 

[AgnishB]

In settings, u will find emails+accounts. There u have to enter ur FB id. Then it will sync

 

[SGoyal]

I have already entered it. it doesn't still show