Help with batching MULTIPLE pdf's into a SINGLE pdf using javascript?

FYI,

Looks like I found sample code online in a PDF document entitled, "Developing Acrobat Applications Using Javascript" on page 47. I'm not sure what is wrong but it doesn't appear to be working successfully. Any assistance is greatly apprecaited. Below is a brief description of what I'd like to accomplish but it doesn't appear to be working successfully:

Combining PDF documents
You can customize and automate the process of combining PDF documents.
If you would like to combine multiple PDF files into a single PDF document, you can do so through a series
of calls to the Doc object’s insertPages method.
Example: Creating a new document from two other documents
// Create a new PDF document:
var newDoc = app.newDoc();
// Insert doc1.pdf:
newDoc.insertPages({
nPage: -1,
cPath: "/c/temp/doc1.pdf",
});
// Insert doc2.pdf:
newDoc.insertPages({
nPage: newDoc.numPages-1,
cPath: "/c/temp/doc2.pdf",
});
// Save the new document:
newDoc.saveAs({
cPath: "/c/temp/myNewDoc.pdf";
});
// Close the new document without notifying the user:
newDoc.closeDoc(true);