I have the following function:

```
function processFiles(path, ext, callback) {
    fs.readdir(path, callback);
}

```

Is it possible for my passed in `callback` function to access its sibling parameter the `ext`? I ask because I am getting an error in Node (using modules) saying:

> 
> ext is not defined
> 
> 
> 

The callback makes use of a `success()` function that sits in the module I have created.

Thanks