input text

hi everyone, can anyone help me code input.text and go to another play frame.
I'm using AS3. consists of an input box and a search button

function onButton_85(e:MouseEvent):void

{
switch (input1.text)
  {

  case "sun" :
  gotoAndPlay(15);
  break;

   case "moon":
   gotoAndPlay(25);
   break;

   default:
   gotoAndStop(46);
   break;

  }

}

My serch button is name "buton_85" and my input box is name "input1".

when I use this code there is no error notification, but my search button doesn't work, I've tried changing the code but it doesn't work. is my code wrong?