Delete all Guides in Document

Does anyone happen to know how to delete all the guides in a document? I'm aware I can use Ctrl + Alt + G then press delete to delete the guides on a single page or spread, but what about in the entire opened document (every page at once)? I've researched it some and located the following script:

var myDoc = app.activeDocument;

if(myDoc.guides.length > 0){myDoc.guides.everyItem().remove();}

I'm sorry to say this script didn't work for me. This is the error message I received:

Error Number: 1025

Error String: Expected end of statement

Engine: Default

File: C:\Users\......etc.

Line: 1

Source: var myDoc = app.activeDocument;

If anyone knows a way around this or knows how to fix this script please let me know and anyone else who might be interested.