Not able to post to friends wall with facebook sdk in ios
===

I have tried with openGraph and normal dialog as below,

`[facebook requestWithGraphPath:[NSString stringWithFormat:@"/%@/feed",@"friends_fb_id" ] andParams:variables andHttpMethod:@"POST" andDelegate:self];`

and 
     
`[facebook  dialog:@"feed" andParams:params andDelegate:self]`

I gave params for both methods as 

`NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   @"friends_fb_id", @"to", 
                                   @"I'm using the Hackbook for iOS app", @"name",
                                   @"Hackbook for iOS.", @"caption",
                                   @"Check out Hackbook for iOS to learn how you can make your iOS apps social using Facebook Platform.", @"description",
                                   @"http://m.facebook.com/apps/hackbookios/", @"link",
@"http://www.facebookmobileweb.com/hackbook/img/facebook_icon_large.png", @"picture",
                                   nil];
`

in delegate method it correctly return the Post_id, so its completing successfully but I can not see the post on friends wall. If try using the Hackbook app that comes with SDK it works perfectly.

What could be the possible solution.
