Connect-assetmanager file does not match req.url

No matter what I do, when I enter a js file (http://localhost:3000/static/js/backbone.js) in the url, it shows the last file asset manager cached. So in this case it is showing jquery.js even though I entered backbone. Here is the code I am using:

var sys = require('sys');
var fs = require('fs');
var Connect = require('connect');
var assetManager = require('connect-assetmanager');
var assetHandler = require('connect-assetmanager-handlers');

var root = __dirname + '/public';

var Server = module.exports = Connect.createServer();

Server.use('/',
    Connect.responseTime()
    , Connect.logger()
);

var assetManagerGroups = {
    'js': {
        'route': /\/static\/js\/.*\.js/
        , 'path': './public/js/'
        , 'dataType': 'javascript'
        , 'files': [
            'jquery.js',
            'backbone.js'
        ]  
    }
};

var assetsManagerMiddleware = assetManager(assetManagerGroups);
Server.use('/'
    , assetsManagerMiddleware
    , Connect.static(root)
);
Server.listen(3000);