Facebook page like in GameCenter with U3DXT?

Hello,

I’ve implemented Game Center and the Leaderboards works well with U3DXT.
However, when I test the game and enter Game Center on top of the window, alongside the App rating option there’s a facebook page like option. It’s currently unavailable. I’m aware that it will be available when the app goes live, but my question is:

Where should I put the facebook page URL in the GameCenter script?

Thanks.

Hi Danail, according to @OceanBlue’s answer in How do I enable the Facebook Like button in iOS 6 GameCenter? - Unity Answers, you have to setup a Facebook app (with same app ID and probably with same iTunes store ID), be live on the AppStore, and use a non-sandbox Game Center user.