code: public function setValue($values)
      {
          $values = $this->makeArray($values);
          if (! $this->valuesArePossible($values)) {
              return false;
          }
          $widgets = $this->getWidgets();
          for ($i = 0, $count = count($widgets); $i < $count; $i++) {
              $possible = $widgets[$i]->getAttribute('value');
              if (in_array($widgets[$i]->getAttribute('value'), $values)) {
                  $widgets[$i]->setValue($possible);
              } else {
                  $widgets[$i]->setValue(false);
              }
          }
  
          return true;
      }
docs: Accessor for current set values.
  
  @param string/array/boolean $values   Either a single string, a hash or false for nothing
  set.
  
  @return bool                       True if all values can be set.