How to set iTweenpath dynamically

Plz tell me how to set iTweenpath dynamically. Or it would also be nice if you tell me how to perform sequence of moves using iTween. **my code: this is not working || Log prompts like: no path with that name (positions) exists! Vector3[] positions=new Vector3[3]; positions[0]=new Vector3(18.5f,3.8f,1.6f); positions[1]=new Vector3(18.5f,4.8f,1.6f); positions[2]=new Vector3(18.5f,4.8f,2.6f); positions[3]=new Vector3(14.5f,4.8f,2.6f); iTween.MoveTo(players[1], iTween.Hash("path", iTweenPath.GetPath("positions"),"time", 8.0f));