private void Request()
    {
        if (manager.isReady)
        {
            request             = new OpenHVRManager.EffectRequest();
            request.duration    = duration;
            request.effectType  = effectType;
            request.position    = transform.position;
            request.direction   = transform.forward;
            request.directional = directional;
            request.range       = range;

            StartCoroutine(manager.PostEffectRequest(request));
        }
    }
 public void Stop()
 {
     CancelInvoke("Stop");
     isPlaying = false;
     request   = null;
 }