Object move using android Accelerameter.

I was uses following code

// Move object using accelerometer var speed = 10.0; function Update () { var dir : Vector3 = Vector3.zero; // we assume that device is held parallel to the ground // and Home button is in the right hand

     // remap device acceleration axis to game coordinates:
     //  1) XY plane of the device is mapped onto XZ plane
     //  2) rotated 90 degrees around Y axis
     dir.x = -Input.acceleration.y;
     dir.z = Input.acceleration.x;
     
     // clamp acceleration vector to unit sphere
     if (dir.sqrMagnitude > 1)
         dir.Normalize();
     
     // Make it move 10 meters per second instead of 10 meters per frame...
     dir *= Time.deltaTime;
         
     // Move object
     transform.Translate (dir * speed);
 }

I want to make small game.Ball left - right movement using accelerator,but above code is not perfectly work for me. Please help me.