Im having problems trying to add (sum) up all the values in a NSMutable Array: The ProfileItems contains data from a Core Data Entity, and is populated with the correct data. I'm just having problems parsing through the NSMutableArray and adding up the profileItems.songLength data.

Thanks in advance

```
   ProfileItems *profileItems = [profileItemsNSMArray objectAtIndex:indexPath.row];

    //Renumber the rows
    int numberOfRows = [profileItemsNSMArray count];
    NSLog(@"numberofRows: %d", numberOfRows);

    for (int i = 0; i < numberOfRows; i++) 
    {
        int sumOfSongs = sumOfSongs + [[profileItems.songLength] objectAtIndex:i];

        NSLog(@"length: %@",sumOfSongs);
    }

```