How do i enter the UnityEngine.Transform instance?

When i start my game i get this message

Assets/Scripts/BallHealth.js(8,30): BCE0020: An instance of type ‘UnityEngine.Transform’ is required to access non static member ‘position’.

And This is my script.

#pragma strict

var maxFallDistance = -10;

function Update () 
{

   if (Transform.position.y >= maxFallDistance)
   {
          Debug.Log("Test");
   }
}

‘Transform’ with an upper case ‘T’ is the class. The reference to the particular instance of the transform associated with the current game object, is ‘transform’ with a lower case ‘t’. So line 8 should be:

 if (transform.position.y >= maxFallDistance)