After going trough some code working with Excel, I noticed a vital difference between the VBS version of GetObject and the KiX version.

Basically the VBS Function works like this:
GetObject([pathname] , [appname.objectype])

While the KiX version works like this:
GetObject([appname.objectype])

This will get you into some trouble trying to edit Excel Workbooks that are already open. For instance in VBS the code would look like this:
 Code:
Dim objExcel
Set ObjExcel = GetObject(,"Excel.Application")

Unfortunately, as far as I know (and tested) this can't be done in KiX.
So here's my request basically for this support in KiX \:\)