Can someone help me convert this camera controller to c# script

i tried to convert it to c# but my camera became wild and i dont know what's wrong pls help me, thanx in advance

var target : Transform; var distance = 5.0;

var xSpeed = 250.0; var ySpeed = 120.0;

var yMinLimit = -20; var yMaxLimit = 80;

private var x = 0.0; private var y = 0.0;

@script AddComponentMenu("Camera-Control/Mouse Orbit")

function Start () {

 target = GameObject.FindGameObjectWithTag ("Player").transform;
 var angles = transform.eulerAngles;
 x = angles.y;
 y = angles.x;

 // Make the rigid body not change rotation
 if (rigidbody)
    rigidbody.freezeRotation = true;

}

function LateUpdate () { if (target) { if(Input.GetMouseButton(1)){ x += Input.GetAxis("Mouse X") xSpeed 0.02; y -= Input.GetAxis("Mouse Y") ySpeed 0.02; }

    y = ClampAngle(y, yMinLimit, yMaxLimit);

    var rotation = Quaternion.Euler(y, x, 0);
    var position = rotation * Vector3(0.0, 0.0, -distance) + target.position;

    transform.rotation = rotation;
    transform.position = position;
 }

}

static function ClampAngle (angle : float, min : float, max : float) { if (angle < -360) angle += 360; if (angle > 360) angle -= 360; return Mathf.Clamp (angle, min, max); }