How do I script a 3-up master

Question

Hi,
Hope you can help. I am trying to create a three page masterSpread in indesign cs3.
To do this I have used the masterSpreads.jsx script provided by Adobe and then simply added another page, which seems logical to me, but it does not work.
If I create masters using the two page option and then go into Master Options I can add the page manually.
What I really want is to create a 3-up  external masterSpread and a 3-up internal masterSpread - with different global logos and backgrounds for the specfic pages.
These will then wrap around a conventional 2-up inside section, which will have another masterSpread setting.
I have included the code below for reference.
I assume I need to change the master options to increase the number of pages, and have looked on my well-used Jongware reference but I cannot work it out.
Please help.
Regards,
Gordon Eddey
[email protected]
HERE IS THE SCRIPT AS IT STANDS:
//Set up the first master spread in a new document.
myDocument = app.documents.add();
//Set up the document.
with (myDocument.viewPreferences)
            {/*doc.viewPreferences*/
                            horizontalMeasurementUnits = MeasurementUnits.MILLIMETERS
                            ;  verticalMeasurementUnits = MeasurementUnits.MILLIMETERS
                            ;  rulerOrigin = RulerOrigin.PAGE_ORIGIN
                            ;  showRulers = true
with(myDocument.documentPreferences)
    pageHeight = "297mm"
    ; pageWidth = "210mm"
    ; facingPages = true
    ; pageOrientation = PageOrientation.portrait
    ; pagesPerDocument = 3
//Set the document's ruler origin to page origin. This is very important
//--if you don't do this, getting objects to the correct position on the
//page is much more difficult.
with(myDocument.masterSpreads.item(0))
//Set up the left page (verso).
    with(pages.item(0))
    //Add a simple footer with a section number and page number.
        with(textFrames.add())
            geometricBounds = ["280", "15", "290", "200"]
            insertionPoints.item(0).contents = SpecialCharacters.sectionMarker;
            insertionPoints.item(0).contents = SpecialCharacters.emSpace;
            insertionPoints.item(0).contents = SpecialCharacters.autoPageNumber;
            paragraphs.item(0).justification = Justification.leftAlign;
with(pages.item(1))
        //Add a simple footer with a section number and page number.
        with(textFrames.add())
            geometricBounds = ["280", "15", "290", "200"]
            insertionPoints.item(0).contents = SpecialCharacters.sectionMarker;
            insertionPoints.item(0).contents = SpecialCharacters.emSpace;
            insertionPoints.item(0).contents = SpecialCharacters.autoPageNumber;
            paragraphs.item(0).justification = Justification.leftAlign;
with(pages.item(2))
        //Add a simple footer with a section number and page number.
        with(textFrames.add())
            geometricBounds = ["280", "15", "290", "200"]
            insertionPoints.item(0).contents = SpecialCharacters.sectionMarker;
            insertionPoints.item(0).contents = SpecialCharacters.emSpace;
            insertionPoints.item(0).contents = SpecialCharacters.autoPageNumber;
            paragraphs.item(0).justification = Justification.leftAlign;

Answer 1

Hi
myDocument.documentPreferences.pagesPerDocument = 3;
is not for MasterSpread, it's for PageObject.
So masterSpread[0].pages[2] is not yet existed.
You can fix your code simply rewrite line 58 and try.
GordonEddey wrote:
with(pages.item(2))
to
with(pages.add())
thanks
mg/