Defining more object type url is not working

Hello,

I could make work to get the whole content for last post with using Object type:
posts?fields=message,object_id,created_time,from,type,link,picture

In that case I get the modul make work, but I have a problem here:
facebook_pull.module
$url = "https://graph.facebook.com/%s/%s?%s&%s";
I had to change it to:
$url = "https://graph.facebook.com/%s/%s&%s&%s";

Do you have any other solution to get all information for the last post?
Thanks a lot,
Aniko