iphone - Empty NSMutableArray , not sure why

Question

Ok so I populate the array like this:

NSMutableArray *participants;
for(int i = 0; i < sizeofpm; i++){
        NSDictionary *pmpart_dict = [pm_participants objectAtIndex:i];
        NSString *pmpart_email = [pmpart_dict objectForKey:@"email"];
        NSString *pmpart_email_extra = [@"pm" stringByAppendingString:pmpart_email];
        [participants setValue:pmpart_email forKey:pmpart_email_extra];
        NSLog(@"%@", participants);
    } 

sizeofpm is 1. that is using count. to get the number of values in the array. How can i store values to that array? It doesnt seem to be working. Thanks!

Answer 1

You don't create the array, you just declare it.

NSMutableArray *participants = [NSMutableArray array];

After that, setValue:forKey: will not add objects to an array. You need addObject::

[participants addObject:pmpart_email];

There is no key.