coffeescript sourcemap not loading in chrome

I am able to compile coffee file to .map file in the same directory as the .coffee/.js file when I call ``` coffee --nodejs --debug-brk app.coffee ``` and start the node-inspector. The js version of the app file gets loaded in chrome. what am i missing?? this is what chrome is showing for three.coffee file .. ``` (function (exports, require, module, __filename, __dirname) { // Generated by CoffeeScript 1.6.2 (function() { app.get('/three', function(req, res) { debugger; return res.send('three/teedde'); }); }).call(this); /* //@ sourceMappingURL=three.map */ }); ``` thanks