If else problem

I’m designing an interface for a trouble shooting program. The basic premise is the caller calls in and the operator walks the caller through a series of yes or no questions. Each yes or no question will take the caller to another question or a solution depending on the answer. I am using two pre packaged Flash UI radio components and a simple ‘Next’ button I made myself. My actionscripting abilities are rather primitive and my script for the button is as follows:


on (release) {
if (yes) {
gotoAndStop(5);
} else if (no) {
gotoAndStop(1);
}
}

My basic problem is that I cannot get the script to notice the if else functions. It is automatically going to frame five on every click.

I have enclosed the .fla file (flash mx). It is in spanish, which I don’t speak very well, so please no diction/grammar comments. :}

Any insight would be greatly appreciated.