run a method from a different class

[mikeyz54]

Hi,
I have two classes: OneViewController and TwoViewController.
In "OneViewController", I have a method called -(void)updateLabel;
And in TwoViewController, I have a IBAction called -(IBAction)GotoNextViewid)sender;

In this IBAction from TwoViewController, I want to write this:
[self updateLabel]; <<The one from OneViewController.

Is this possible to do? If so, what do I need to add?

Thanks,
Michael