I have `NSMutableArray` populated with `NSMutableDictionary` objects, how can I retrieve let's say second item in `NSMutableArray` and change that dictionary.

```
NSMutableArray *tempArr = [[NSMutableArray alloc]init];
NSMutableDictionary *al = [[NSMutableDictionary alloc]init];

for(int i=0; i<[theArray count]; i++) {
    id object = [theArray objectAtIndex: i];
    id object2 = @"0";
    [al  setObject:object forKey:@"titles"];
    [al setObject:object2 forKey:@"levels"];
    [tempArr addObject:al];
}

NSLog(@"fubar %@", [tempArr objectAtIndex:2]);

```

So i need to access NSDictionary by Key and change Key's value. Thank you