実行中のiTweenの数

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

    void Start () {
        Debug.Log ("Start1: " + iTween.Count ());

        iTween.MoveTo (
            gameObject,
            iTween.Hash ("y", 4.0f, "time", 1.0f, "oncomplete", "onComplete")
        );

        Debug.Log ("Start2: " + iTween.Count ());
    }

    void onComplete () {
        Debug.Log ("onComplete: " + iTween.Count());
    }

}