I know this insanely simple, but I am re-teaching myself the basics and trying to get my head around this:-)

I have one ViewController called MainVC and I have one called ClassVC

In ClassVC I have this code:

@interface ClassVC : UIViewController
{
   NSString *mainLine;
}

@property (nonatomic, retain) NSString *mainLine;
@end

and I have this in the implementation file:

@synthesize mainLine = _mainLine;

-(NSString *)_mainLine
{
    _mainLine = @"This a string from a Class";
    return _mainLine;
}

Now I was thinking that if I #import the ClassVC into MainVC I would be able to transfer that string along as well like so:

 This code is in the viewDidLoad

    _mainLabel.text = _secondClass.mainLine;

    NSLog(@"%@", _secondClass.mainLine);

But that is not working - so cannot I not pass strings in through this way???