What am i missing in my url

Hi folks,
i m trying to put values in my url (fb OAUTH) but i think the url is missing something. can anyone help

https://graph.facebook.com/oauth/access_token?client_id=123&redirect_uri=http://www.abc.com/fbml.php&client_secret=123&code=.

the code=. shld bring values but it isn’t. help pls

You will need to post the code your using to generate the URL as we can’t help you based on the URL alone.