How to reset progress and use empty GameObject to instantiate new prefabs

I just finished the 7th Chapter of Game Development Essentials. What I want to do now is to reset my progress by discharging the generator when the Player gets inside the outpost and distribute 4 new powerCells around the outpost so the player has to collect them again to open the door again.

Also inside the outPost I gave the lamp a box collider and created an OnTriggerEnter and Exit jscript so the lamp to switch on or off whenever the Player is inside or not, maybe I could use this script for what I want to do. Any ideas ? Thank you.

#pragma strict
var roomLight : Light;

function Start () {


function OnTriggerEnter(col : Collider)
	if(col.gameObject.tag == "Player")
		roomLight.GetComponent(Light).enabled = true;

function OnTriggerExit(){
  roomLight.light.enabled = false;

As I recall, that code uses an integer to count how many cells you have.

Set that integer back to zero when you open the door.

You may also have to reset GUI elements and textures to starting values.