NSMutableDictionary - write and read

Write value for key:

[progressDict setObject:@"Uploading ..." forKey:@"status"];

[progressDict setObject:[NSNumber numberWithInt:i] forKey:@"progress"];

Read value for key:

NSLog(@"key is status, value is %@",[dict objectForKey:@"status"]);

NSLog(@"key is progress, value is %@",[dict objectForKey:@"progress"] );