storyboard push with dynamic button

[erdinc27]

i create some dynamic buttons. when the button pressed i want to push a new view controller. but i cant make it. it doesnt work what i wrote. here is my codes.

KategoriViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:@"KategoriViewController"];
[self.navigationController pushViewController:controller animated:YES];

what can i do to push new view controller when dynamic button is tapped ?

[erdinc27]

i found my mistake. i made the first view initial view. so navigation controller was nil. now i made navigation controller as initial one so it works now.