I have a basic script for an enemy to chase a player when the player gets near him. When the player "escapes" the enemy I would like the enemy to return to it's starting position.

I am having a little trouble storing the initial enemy starting position and getting the enemy to return there. The enemy successfully follows the player and stops following when the player gets too far away. But when the enemy is supposed to return to his start position I get an error.

Here is the relevant code (the game is top down view):

var myTransform : Transform; //current transform data of this object
private var startPosition;

function Start()
{
     startPosition = transform.position; //store the start position
}

function ReturnToPosition()
{
        //rotate to look at the start position
        myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
        Quaternion.LookRotation(startPosition.position - myTransform.position),rotationSpeed*Time.deltaTime);

        //move back to start position
        myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
}

I have ommitted any code that isn't relevant. I also did a debug to check that ReturnPosition() was being run and it is.

The error I get is:

MissingFieldException: Field 'UnityEngine.Vector3.position' not found.

Thanks for taking a look.