Trying To Use The GoTo Method Of The Word.Application ActiveX Object In JavaScript

I am trying to use the Goto method of the Word ActiveX object. I am
trying to open a document and go to a named bookmark. If I use this
code in VB it works, so I'm sure the approach is possible, I just can't
get JavaScript to work with it.

Here is the code I am using, the error I get from IE is Object
Expected:
Hope someone can help! Any help would be much appreciated

function PageLoad()
{
var WordApp = new ActiveXObject('Word.Application');
WordApp.Visible = true;
var documentlocation = crmForm.all.new_documentlocation.DataValue;
var wd = WordApp.Documents.Open(documentlocation);
wd.Select();
var Name = 'TestFred'
var wr = wd.Selection.GoTo(What : Word.WdGoToItem.wdGoToBookmark,Name :
'TestFred');
}