How Do I Update a cSharp script var from js?

I’ve been looking into this a bit and still havn’t got it to work. I’d be willing to either get them working together somehow, or use a shared global variable, or rewrite the csharp script to js (although it extends another csharp script i didnt write). I moved the csharp script to Standard Assets which seemed to help, but I still get an error: NullReferenceException: Object reference not set to an instance of an object
BallControl.Update () (at Assets/Game/BallControl.js:37)

I’m using the following cSharp script to make a GUI for my game:

using UnityEngine;
using System.Collections;

public class GameGui : VRGUI
{
	public int lives = 5;
	public int score = 0;
	
	public override void OnVRGUI()
	{
		GUI.skin.label.fontSize = 30;
		GUILayout.BeginArea(new Rect(300, 100, 200, 100));
		GUILayout.Label("Lives: " + lives);
		GUILayout.EndArea();
		GUILayout.BeginArea(new Rect(900, 100, 200, 100));
		GUILayout.Label("Score: " + score);
		GUILayout.EndArea();
	}

    public void RemoveLife() {
	lives = lives - 1;	
}
}

This is the JS script i am trying to change the cSharp one from:

#pragma strict
var left = -100;
var right = 100;
var top = 100;
var bottom = -100;
var xV : float;
var yV : float;
var zV : float;
var damage = 100;
var guiscript : GameGui;  

function Start () {
	xV = Random.Range(0,0.5);
	yV = Random.Range(0,0.5);
	zV = Random.Range(0,2.0);
}

function Update () {
	//move the ball
	transform.position.x = transform.position.x + xV;
	transform.position.y = transform.position.y + yV;
	transform.position.z = transform.position.z + zV;
	
	//ball bounces
	if(transform.position.x < left || transform.position.x > right) xV = -1 * xV;
	if(transform.position.y < left || transform.position.y > right) yV = -1 * yV;
	if(transform.position.z > right) zV = -1 * zV;
	
	//lose a life
	if(transform.position.z < left) {
		transform.position = Vector3(0,0,0);
		xV = Random.Range(0,0.5);
		yV = Random.Range(0,0.5);
		zV = Random.Range(0,2.0);
		
		guiscript = this.GetComponent("GameGui");  
		guiscript.RemoveLife();
	}
}

I am just trying to change the GUI in csharp when stuff happens in js. Any help would be much appreciated!

guiscript.removeLife();

I don’t see this routine in GameGui.cs. You need that.

I figured it out. I didn’t have the two scripts on the same GameObject, so I had to find that GameObject first.

var GameGui : GameObject;
var GuiScript : GameGui;

/* and later */
                GameGui = GameObject.Find("OVRCameraController");
		GuiScript = GameGui.GetComponent("GameGui");  
		GuiScript.RemoveLife();