Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS

Ludwing Najera
Ludwing Najera
4,596 Points
Posted by Ludwing Najera
Ludwing Najera
4,596 Points

invalid value? what is going on here...

ok, my code challenge says this: Let's add the year of the album to the 'albumMutable' variable. Where the key is a NSString 'year' and the value is also a NSString '1969'. I did that, but it says: Bummer! The year set is not the correct value. here is my code…

NSDictionary *album = @{ @"title": @"Abbey Road", @"artist": @"The Beatles"}; NSMutableDictionary *albumMutable = [NSMutableDictionary dictionaryWithDictionary:album]; [albumMutable setObject:@1969 forKey:@"year"];

PLEASE HELP ME! D:

2 Answers

John W
John W
21,558 Points
John W
John W
21,558 Points

What you have there, @1969, actually produces an NSNumber. To produce an NSString, you need to quote the actual string just like what you did with @"year"

Kal K
Kal K
13,332 Points

That means that there is an error in the video because I ran into the same problem because it was not quoted in the video at the Mutable part