NSDictionary of NSDictionaries-Collection of common programming errors

I’m having trouble with the following code to create an NSDictionary of NSDictionaries. There is no compile error, but during runtime, it fails on this code.

NSDictionary *section0 = [NSDictionary dictionaryWithObjectsAndKeys:
                            [NSDictionary dictionaryWithObjectsAndKeys:
                                @"Caller ID", @"label",
                                @"name", @"field",
                                @"Call", @"fieldType", nil
                            ], 0,
                            [NSDictionary dictionaryWithObjectsAndKeys:
                                @"Number", @"label",
                                @"number", @"field",
                                @"Call", @"fieldType", nil
                            ], 1,
                            nil
                         ];

This is my first app, so any help you can provide is greatly appreciated.