var speed = 5.0;
var limitY = -44.0;

function Update ()
{  
    if (this.gameObject.transform.position.y <= 130 &&
        this.gameObject.transform.position.y >= limitY) {
        if (Input.GetKey(KeyCode.UpArrow)) {
            transform.Translate(0, speed * Time.deltaTime, 0);
        }

        if (this.gameObject.transform.position.y >= 130) {
            this.gameObject.transform.position.y = 130;
        }

    }
   
    if (this.gameObject.transform.position.y <= 130 &&
        this.gameObject.transform.position.y >= limitY) {
        if (Input.GetKey(KeyCode.DownArrow)) {
            transform.Translate(0, -speed * Time.deltaTime, 0);
        }

        if (this.gameObject.transform.position.y <= limitY) {
            this.gameObject.transform.position.y = limitY;
        }
    }
 //Debug.Log("aa"+this.gameObject.transform.position.y);
}