Can't programmatically hide UIButton created with IB

Question

My iOS UIButton is correctly linked from IB to an IBOutlet in my view controller, as I can change its title from my code. Ie:

[self.myButton setTitle:@"new title" forState:UIControlStateNormal]; //works

However,

[self.myButton setHidden:YES]; //doesn't work
//or
self.myButton.hidden = YES; //doesn't work

What's going on? How can I make myButton disappear?

Update: some additional info

Here's the code related in to my UIButton:

in my .h file

IBOutlet UIButton *myButton;
-(IBAction)pushedMyButton:(id)sender;
@property (nonatomic,retain) UIButton *myButton;

in my .m file

@synthesize myButton;
- (void)pushedMyButton:(id)sender{
    self.myButton.hidden = YES;
}
- (void)dealloc{
    [self.myButton release];
}

Answer 1

Ok I found a workaround that works but I still don't know why my original code wasn't working in the first place. I used Grand Central Dispatch to dispatch a block containing the hide call on the main queue, like this:

dispatch_async(dispatch_get_main_queue(), ^{
    self.myButton.hidden = YES; //works
});

Interesting. None of the initial code in my IBOutlet was wrapped in GCD blocks though. Any ideas?

Answer 2

That should work, try rename it and hide it just to check that there aren't two buttons on top of each other.