Joystick isn't responding?

I have this java code: #pragma strict

 var speed = 65.0; // Degrees per second 
  
  function Update() {
     var h = Input.GetAxis("Horizontal") * Time.deltaTime * speed;
     var v = Input.GetAxis("Vertical") * Time.deltaTime * speed;
     transform.Rotate(v,h,0);
  }

The purpose of which is to rotate plane left or right if the joystick is moved right or left, and to rotate it upwards and backwards if the joystick is moved up or down. Like this:

The problem is that my variables aren't changing(plane moves in a straight line), but I can move the joystick on the phone emulator(BlueStack). So what can be causing the error? P.S. I've changed Input, so it uses joystick. And I have set the script as a component of my Plane Model. Please, help!