mORMot Open Source

Now, with the authentication header, it works, thanks.
But now I would need to deserialize the returned json to an object.
Starting with these lines of the above so post:
t := _Obj(['score',1337,'playerName','Sean Plott','cheatMode',False]);
i've tried to figure out how to prepare the variant to be property deserialized but all i have found are examples in which a json is prepared, none of the opposite process.
May you point me to the correct page in the doc ?
many thanks again
nicola