Autofilling Google Slides from Google Sheets

Code.gs

function myFunction() {
  var sheeturl = "https://docs.google.com/spreadsheets/d/11_gwfesnphiI6uy4HmnCNpzL-pX1572SPKDiiiROnKs/edit";
  var ss = SpreadsheetApp.openByUrl(sheeturl);
  var deck = SlidesApp.getActivePresentation();
  var sheet = ss.getSheetByName("test");
  var values = sheet.getRange('A2:B18').getValues();
  var slides = deck.getSlides();
  var template = slides[0];

  values.forEach(function(page) {
    var uid = page[0];
    var cdx = page[1];

    console.log('Duplicating template: ', uid, cdx)
    template.duplicate();
    slides = deck.getSlides();
    template = slides[0];
    slide = slides[1];
    var shapes = slide.getShapes();
    shapes.forEach(function(shape) {
      shape.getText().replaceAllText('${location}', uid);
      shape.getText().replaceAllText('${cdx}', cdx);
    });
  });
}