code: def update():
      
      assert request.method == "POST", "POST request expected received {}".format(request.method)
      if request.method == 'POST':
          # Get figure stats
          selected_run = request.form['selected_run']
          variable_names = utils.get_variables(selected_run).items()
  
          if len(current_index) < 1:
              for _, v_n in variable_names:
                  current_index[v_n] = 0
  
          logging.info("Current index: {}".format(current_index))
          data = utils.get_variable_update_dicts(current_index, variable_names, selected_run)
  
          return jsonify(data)
docs: Called by XMLHTTPrequest function periodically to get new graph data.
  
      Usage description:
      This function queries the database and returns all the newly added values.
  
      :return: JSON Object, passed on to the JS script.