Timer label isn't counting down - objective-c

Question

This is not all the code. I have made sure that I have declared everything correctly however the label is not changing as 'seconds' is decreasing.
I'm not sure why as in 'subtractTime' I have made timerLabel.text equal to the string with format using seconds which "should" and is counting down as I use an alert to reset the game and so even though the label isn't changing, I know it is counting down otherwise the alert wouldn't be triggered from 'seconds' equalling 0.
- (void)setupGame;
{
seconds = 30;
count = 0;
timerLabel.text = [NSString stringWithFormat: #"Time: %i", seconds];
scoreLabel.text = [NSString stringWithFormat: #"Score: %i", count];
timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:#selector(subtractTime)
userInfo:nil
repeats:YES];
}
- (void)subtractTime;
{
seconds--;
timerLabel.text = [NSString stringWithFormat:#"Time: %i", seconds];
if (seconds == 0)
{
[timer invalidate];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle: #"Time is up !"
message: [NSString stringWithFormat: #"You Scored %i points", count]
delegate:self
cancelButtonTitle: #"Play Again"
otherButtonTitles:nil];
[alert show];
}
}
#end

Answer 1

Make sure in Storyboard/Interface builder that your label is wired properly to the viewXontroller's .h file. A good way to test this is to "prime" your label on the XIB with something other than "Time:" but instead with something nonsensical like "foo". That way you'll be able to accurately tell if the label is changing at all versus troubleshooting whether or not your Int value isn't showing properly.