Struggling with iTween moveTo example code

Hi all,

Bit embarrassing this one. I want to start using iTween but I can't even get the example code (copied from the PixelPlacement website) to work. Unity makes a number of complaints: (10,42)...Expression denotes a 'type', where a 'variable', 'value' or 'method group' was expected. I've removed 'Vector3' to leave just the variable but then I get... (10,44)... Unexpected symbol ',', expecting ')' That places the expected ')' in the middle of the Vector3 variable and Unity complains again (with good reason). What am I missing here?

 using UnityEngine;
 using System.Collections;
 
 public class Tester : MonoBehaviour
 {
 
     // Use this for initialization
     void Start()
     {
         iTween.MoveTo(gameObject,(2,0,0),2);
     }
     
     // Update is called once per frame
     void Update () {
     
     }
 }