How to move the camera depending on the score?

Thanks for reading my question...

First i am very new to scripting , i have been days reading how to move the camara how i want but nothing works exactly.

I want to move the camara position Y (9) each time the score of the game reach 7 or a multiple of seven

Example:

      Score = 7  Move Camraa in Y 9
      Score = 14 Move Camara in Y 9 more
      Score = 21 Move Camara in Y 9 more
      And so.....

The script i have, the camara move Y wen the score reach 7 but never stops , it continuously moving in Y.

Here is the script , thanks for your help.

 #pragma strict
 var guiHeight : GUIText; 
 var myCamera : GameObject;
 var sum : int = 2;
 
 private var height: int = 0 ;  
 
 function Start () {
  guiHeight.text = "Height: 0"; 
 }
 
 function Update () {
 
 
  if(Input.GetButtonDown("Fire1")){ 
   height += 1;
   guiHeight.text = "Height: " + height;   
  }
    if( height % 700 == 7 )
           {
             myCamera.transform.position.y += 9; 
           }
 }