NSMutableDictionary *chapId = [[NSMutableDictionary alloc] init];

                                 if ([_theBook.chaptersArray count] == 1) {
                                     NSMutableDictionary *chapId = [[NSMutableDictionary alloc] initWithDictionary:[_theBook.chaptersArray objectAtIndex:<#(NSUInteger)#>]];

                                     [chapId setValue:[_theBook.chaptersArray valueForKey:@"_v"] forKey:@"_v"];
                                     [chapId setObject:[_theBook.chaptersArray valueForKey:@"_id"] forKey:@"_id"];
                                     [chapId setObject:[_theBook.chaptersArray valueForKey:@"book"] forKey:@"book"];
                                     [chapId setObject:[_theBook.chaptersArray valueForKey:@"endDate"] forKey:@"endDate"];
                                     [chapId setObject:[_theBook.chaptersArray valueForKey:@"startDate"] forKey:@"startDate"];
                                     [chapId setObject:[_theBook.chaptersArray valueForKey:@"pages"] forKey:@"pages"];


                                 } else {
                                     chapId = [_theBook.chaptersArray objectAtIndex:indexPath.row];
                                     [chapId setObject:[[_theBook.chaptersArray objectAtIndex:indexPath.row] objectForKey:@"_v"] forKey:@"_v"];
                                     [chapId setObject:[[_theBook.chaptersArray objectAtIndex:indexPath.row]objectForKey:@"_id"] forKey:@"_id"];
                                     [chapId setObject:[[_theBook.chaptersArray objectAtIndex:indexPath.row] objectForKey:@"book"] forKey:@"book"];
                                     [chapId setObject:[[_theBook.chaptersArray objectAtIndex:indexPath.row] objectForKey:@"endDate"] forKey:@"endDate"];
                                     [chapId setObject:[[_theBook.chaptersArray objectAtIndex:indexPath.row] objectForKey:@"startDate"] forKey:@"startDate"];
                                     [chapId setObject:[[_theBook.chaptersArray objectAtIndex:indexPath.row] objectForKey:@"pages"] forKey:@"pages"];
                                 }





2017-03-18 19:02:04.299 lookback[32756:6220430] {
    "_id" =     (
                (
            58cdbc50107dc36f64d6537b
        )
    );
    "_v" =     (
                (
            "<null>"
        )
    );
    book =     (
                (
            58cdbc50107dc36f64d6537a
        )
    );
    endDate =     (
                (
            "2018-01-17T05:00:00.000Z"
        )
    );
    pages =     (
                (
                        (
            )
        )
    );
    startDate =     (
                (
            "2017-01-18T05:00:00.000Z"
        )
    );
}