code: function (val) {
                  var value;
  
                  try {
                      value = JSON.parse(val);
                  }
                  catch (e) {
                      value = undefined;
                  }
  
                  return Array.isArray(value) ? value : undefined;
              }
docs: A "array" type value stores Array data format
  
  @param {String} val
  @returns {Object}