public static function getCssFilesOptions(GetOptionsEvent $event) { if ($event->getEnvironment()->getDataDefinition()->getName() !== 'tl_metamodel_rendersettings' || $event->getPropertyName() !== 'additionalCss' || $event->getSubPropertyName() !== 'file') { return; } $options = Helper::searchFiles($GLOBALS['TL_CONFIG']['uploadPath'], '.css'); $event->setOptions($options); }