Help with filter for mFilter2 / mSearch2

<?php
class showParentTv extends mse2FiltersHandler {

    /**
	 * Prepares values for filter
	 * Returns array with human-readable parents of resources
	 *
	 * @param array $values
	 * @param string $name Filter name
	 * @param integer $depth
	 * @param string $separator
	 *
	 * @return array Prepared values
	 */
	public function getShowparenttvValues(array $values, $name = '', $depth = 1, $separator = ' / ') {
		

	$this->modx->log(modX::LOG_LEVEL_ERROR,'getShowparenttvValues start');

	// get all the parent resources we need
	$values = $this->modx->getChildIds(25,1,array('context' => 'web'));

	//for mfilter2 (copied from other filter)
	$keys = array_keys($values);
	if (empty($keys) || (count($keys) < 2 && empty($this->config['showEmptyFilters']))) {
			return array();
	}

	$tvId = 41;

	// loop the ids
	foreach ($values as $value => $ids) {
		if ($value !== '') {
				
				// get tvvalue for each resource
				$tv = $this->modx->getObject('modTemplateVar', $tvId);
				$val = $tv->getValue($ids);

				//$this->modx->log(modX::LOG_LEVEL_ERROR,'getShowparenttvValues tvvalue: '.$val);

				// explode val. Result is array with separate numbers (ids of resources)
				$separateTvValues = explode("||", $val);

				//for each value get pagetitle
				foreach ($separateTvValues as $SchoolResource) {
					$page = $this->modx->getObject('modResource', $SchoolResource);
					$pagetitle = $page->get('pagetitle');
				}

				// connect it all...
				// pagetitle = name of filter option (schoolname)
				// id's of all child resources who's parents have the schoolname in the tv 41
				

				// finally, this needs to come out for mFilter2:
				$title = trim(
					isset($names[$value])
						? $names[$value]
						: $value
				);
				$results[$title] = array(
					'title' => $title, // I think should contain name of filter option
					'value' => $value, // same
					'resources' => $ids, // ids of resources who's parents have this specific tv value
				);
			}
		}
		ksort($results);

		return $results;
	}

}