public GameObject ball;

	int count = 0;

 	// Use this for initialization
	void Start () {

	}

	// Update is called once per frame
	void Update () {

		if (count < 10) { // if teh count is less tahn zero then decrease count by one.
			if (Input.GetKeyDown (KeyCode.Space)) {
				count += 1;
				Instantiate (ball, new Vector3 (Random.Range (0, 0), 6f, 0), Quaternion.identity);

		}


		}
	}