Node.js application works locally but not in Cloud

My app.js file looks like this:

var port = (process.env.VMC_APP_PORT || 3000);
var host = (process.env.VCAP_APP_HOST || 'localhost');
var http = require('http');
var rip = require('./config.js');

http.createServer(function (req, res) {
        //do nothing...no response expected via http
}).listen(port, host);

The config.js file contains this (and more, but cut for brevity/relevance):

//several global.<property_name> assignments
global.mName                    = "Application Name";
//serveral more global.<property_name> assignments
...
...
require("./main.js");

The main.js file begins like this:

console.log(mName+" >>> Loading.");

When I run the application locally, it executes fine by running:

node app.js

However, when I push the application to cloud foundry using the following command:

vmc push [app_name] --runtime=node06

I get the following error:

Creating Application: OK Uploading Application:
Checking for available resources: OK
Processing resources: OK
Packing application: OK
Uploading (10K): OK
Push Status: OK Staging Application 'app_name': OK
Starting Application 'app_name': ..........................

Error: Application [app_name] failed to start, logs information below.

====> /logs/stderr.log <====

node.js:134 throw e; // process.nextTick error, or 'error' event on first tick ^ ReferenceError: mName is not defined at Object. (/var/vcap/data/dea/apps/app_name-0-6996d737ed319bcffaf696d653423d7c/app/main.js:6:1) at Module._compile (module.js:411:26) at Object..js (module.js:417:10) at Module.load (module.js:343:31) at Function._load (module.js:302:12) at Array. (module.js:430:10) at EventEmitter._tickCallback (node.js:126:26)

It seems like the properties I set in the global object in config.js are not being carried to the main.js. I verified this by modifying the main.js to explicitly reference global.mName rather than just mName and that error went away, but another reference to a global object property then started to complain.

Since everything works fine locally without the explicit "global." reference, I don't think I should have to explicitly reference "global." for those variables. Is there something I'm missing here? Any help is appreciated.

Thanks!