adding guides to the first page

I'm trying to add guides to the first page but it's not working. Anyone know what I'm doing wrong here? 

function createDocument(documentWidth, documentHeight, bleed) {
   app.activeDocument.viewPreferences.horizontalMeasurementUnits = MeasurementUnits.PIXELS;
    app.activeDocument.viewPreferences.verticalMeasurementUnits = MeasurementUnits.PIXELS;

    var doc = app.documents.add({
      documentPreferences: {
        pageWidth: documentWidth,
        pageHeight: documentHeight,
        documentBleedTopOffset: bleed,
        documentBleedUniformSize: true,
        facingPages: false
      }
    });

    //Set the rulers to inches
    app.activeDocument.viewPreferences.horizontalMeasurementUnits = MeasurementUnits.PIXELS;
    app.activeDocument.viewPreferences.verticalMeasurementUnits = MeasurementUnits.PIXELS;

    // Add 2 pages to the document
    for (var i = 0; i < 2; i++) {
      doc.pages.add();
    }

    // Add guides to the first page
    var page = doc.pages.item(0);
    page.guides.add(HorizontalOrVertical.HORIZONTAL, 49); 
    page.guides.add(HorizontalOrVertical.HORIZONTAL, 751); 
    page.guides.add(HorizontalOrVertical.VERTICAL, 600); 
    page.guides.add(HorizontalOrVertical.VERTICALL, 648.75); 
    page.guides.add(HorizontalOrVertical.VERTICAL, 900); 
  }

  if (checkbox1.value == true) {
    createDocument(1200, 800, 9);
  } else {
    exit();
  }