I have an NSMutableDictionary called "output" and I am adding an NSString into it that is an integer. What is the proper way to do this? I can't figure it out. Everything I've tried ends up giving memory leaks.

This is what I currently have:

val is an int

countryName is an NSString

Here is how I declare "output":

NSMutableDictionary *output = [[[NSMutableDictionary alloc] init] autorelease];

Here is the code that causes a memory leak:

NSString *temp = [NSString stringWithFormat:@"%d",val];
[output setValue:temp forKey:countryName];