Make the first person controller transparent?

Hi everyone :) I have a script that makes the camera move up and down when you walk. However, when I test my game I see that if you look straight down you can see the first person controller. Is there any way to make it transparent? Thanks for any help!

Script I am using -

 private var timer = 0.0; 
  var bobbingSpeed = 0.18; 
  var bobbingAmount = 0.2; 
  var midpoint = 2.0; 
  
  function Update () { 
     waveslice = 0.0; 
     horizontal = Input.GetAxis("Horizontal"); 
     vertical = Input.GetAxis("Vertical"); 
     if (Mathf.Abs(horizontal) == 0 && Mathf.Abs(vertical) == 0) { 
        timer = 0.0; 
     } 
     else { 
        waveslice = Mathf.Sin(timer); 
        timer = timer + bobbingSpeed; 
        if (timer > Mathf.PI * 2) { 
           timer = timer - (Mathf.PI * 2); 
        } 
     } 
     if (waveslice != 0) { 
        translateChange = waveslice * bobbingAmount; 
        totalAxes = Mathf.Abs(horizontal) + Mathf.Abs(vertical); 
        totalAxes = Mathf.Clamp (totalAxes, 0.0, 1.0); 
        translateChange = totalAxes * translateChange; 
        transform.localPosition.y = midpoint + translateChange; 
     } 
     else { 
        transform.localPosition.y = midpoint; 
     } 
  }

The problem -