hello all i want to retrieve my all the wall post that i have posted until now i am using this fql query from my native iphone application in order to fetch it but i think i am maiking some mistake please guide me how could i do that the following is my fql query to get wall post

- (void)session:(FBSession*)session didLogin:(FBUID)uid {

    NSString *fql = [NSString stringWithFormat:@"SELECT comments, likes FROM stream WHERE post_id=100000182297319"];



    NSLog(@"session key is %@",_session.sessionKey);

    NSLog(@"from global key is %@",[twitfacedemoAppDelegate getfacebookkey]);

    NSDictionary* params = [NSDictionary dictionaryWithObject:fql forKey:@"query"];



    [[FBRequest requestWithDelegate:self] call:@"facebook.fql.query" params:params];

this is my other delgate method to get the wall post but this code is not working

- (void)request:(FBRequest*)request didLoad:(id)result {
    @try
    {
        NSLog(@"result is %@",result);

        if(result==nil)
        {
            UIAlertView *a=[[UIAlertView alloc]initWithTitle:@"Can't login" message:@"You cant login here." delegate:nil cancelButtonTitle:@"ok" otherButtonTitles:nil];
            [a show];
            [a release];
        }
        else
        {
            NSArray* users = result;
            NSDictionary* user = [users objectAtIndex:0];


            NSString* name = [[NSString alloc]initWithString:[user objectForKey:@"name"]];
            NSLog(@"name is %@",name);

            _label.text = [NSString stringWithFormat:@"Logged in as %@", name];

            NSString *globalfacebookname;
            globalfacebookname=[[NSString alloc]initWithString:name];



            NSLog(@"value is %@",globalfacebookname);

            NSString *fid=[user objectForKey:@"uid"];
            NSLog(@"FACEBOOK ID WITH STRING DATATYP %@",fid);
            [twitfacedemoAppDelegate fetchfacebookid:fid];
        }
    }
    @catch (NSException * e) 
    {
        NSLog(@"Problem in dialog didFailWithError:%@",e);
    }

}

please guide me how could i retrieve my all the post from facebook to my native iphone application through fql query

thanks in advance