Input Text

Hello, I'm relatively new to Action Script 3, so I'm having some trouble with an Input Text code.

I have an Input box called "caja" and I want people to enter the right answer, so I have some code in place that supposedly redirects you to another scene depending on your answer. The thing is when I enter the right answer it takes me to the wrong answer scene. The wrong answer does work but for some reason, the other one doesn't. Any ideas?

Code:

var check:Boolean = false;

var input1:String;

var answer = "no";

button_12.addEventListener(MouseEvent.CLICK, checkClick);

function checkClick(event:MouseEvent):void{

    input1 = caja.text;

    check = true;

    if (input1 == answer) {

gotoAndPlay(1, "Scene 4");

    }

    else gotoAndPlay(110, "Scene 4");

};