abort popViewControllerAnimated in viewWillDisappear

[chapaco]

Hello,

my view controller is being popped an I need abort it in the viewWillDisappear methode, so somethink like this:

- (void)viewWillDisappear:(BOOL)animated {  
    if ([self allowCloseScreen]) {   // close screen is not allowed

        // HIER ABORT CODE

    } else {
        [super viewWillDisappear:animated];
    }
}

it is possible to do this? how?

thanks