How to Move Controller Forward Automatically?

Hey guys,

Hate to ask, but was wondering if somebody could help me with this script?

I'm trying to have my controller move forward automatically. So far, I've been unsuccessful. Here's my code:

         var moveForward = transform.TransformDirection(Vector3.forward);
         controller.transform.position += moveForward * 50 * Time.deltaTime;

         GetComponent(CharacterController); // in my Start function

and I have my CharacterController controller var declared. My player moves around can be controlled.

The problem is I can't get him to move forward automatically when I need him to.

What's wrong with my script?

Thanks for any help in advance.