cloudinary PhotoAlbum dynamic context

upload.js

$(function () {
  "use strict";

  //The idea is to only load this once someone has filled out the form
  let newContext = 'email=new@test.com|credits=Me New Context';

  $('.cloudinary-fileupload')
  .cloudinary_fileupload({
    dropZone: '#direct_upload',
    context: newContext,
    start: function () {
      $('.status_value').text('Starting direct upload...');
    },
    progress: function () {
      $('.status_value').text('Uploading...');
    }
  })
  .bind('fileuploadprogress', function(e, data) { 
    $('.progress_bar').css('width', Math.round((data.loaded * 100.0) / data.total) + '%'); 
  })
  .on('cloudinarydone', function (e, data) {
      $('.status_value').text('Idle');
      $.post('upload_complete.php', data.result);
      var info = $('<div class="uploaded_info"/>');
      $(info).append($('<div class="data"/>').append(prettydump(data.result)));
      $(info).append($('<div class="image"/>').append(
        $.cloudinary.image(data.result.public_id, {
          format: data.result.format, width: 450, height: 450, crop: "fill"
        })
      ));
      $('.uploaded_info_holder').append(info);
  });
      $('.cloudinary-fileupload').cloudinary_fileupload('option', 'formData').context = newContext;

});