Model for form-filter
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class Filterdemand extends \TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject {
	
	/**
	 * Sys-testings set within filter-form
	 * @var \TYPO3\CMS\Extbase\Persistence\ObjectStorage<\Vendor\Medialibrary\Domain\Model\Test>
	 */
	protected $testings;
	
	/**
	* __construct
	*
	* @return AbstractObject
	*/
	public function __construct() {
		$this->testings = new \TYPO3\CMS\Extbase\Persistence\ObjectStorage();
	}
	
	
	/**
     * Returns the testings
     *
     * @return \TYPO3\CMS\Extbase\Persistence\ObjectStorage<\Vendor\Medialibrary\Domain\Model\Test> $testings
     */
	public function getTestings() {
		return $this->testings;
	}

	/**
     * Sets the testings
     *
     * @param $testings testings
     * @return void
     */
	public function setTestings($testings) {
		$this->testings = $testings;
	}
	
}



Model of records parsed through ForViewHelper
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class Test extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity {
	
	/**
	 * Title of entry
	 *
	 * @var string
	 */
	protected $title;
	
	/**
	 * Returns the title
	 *
	 * @return string $title
	 */
	public function getTitle() {
		return $this->title;
	}

	/**
	 * Sets the title
	 *
	 * @param string $title
	 * @return void
	 */
	public function setTitle($title) {
		$this->title = $title;
	}
	
}

Controller (for different records than the ones parsed through ForViewHelper)
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class AsdfController extends \TYPO3\CMS\Extbase\Mvc\Controller\ActionController {
	
	/**
	 * testRepository
	 *
	 * @var \Vendor\Medialibrary\Domain\Repository\TestRepository
	 * @inject
	 */
	protected $testRepository;
	
	/**
	 * @var \TYPO3\CMS\Extbase\Object\ObjectManagerInterface
	 * @inject
	 */
	protected $objectManager;
	
	
	
	/**
	 * action list
	 *
	 * @param Vendor\Medialibrary\Domain\Model\Filter $filter Filter set within form
	 * @return void
	 */
	public function listAction(\Vendor\Medialibrary\Domain\Model\Filterdemand $filterdemand = NULL) {
		
		$testings = $this->testRepository->findAll();
		
		$filterdemand = $this->objectManager->get('Vendor\\Medialibrary\\Domain\\Model\\Filterdemand');
		$filterdemand->setTestings($testings);
		
		
		$this->view->assignMultiple(array(
			'testings' => $testings,
			'filterdemand' => $filterdemand,
		));

	}

}


View
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		<f:form action="list" name="filter" object="{filterdemand}">
			<fieldset>
				<f:for each="{testings}" as="test">
					<f:form.checkbox value="{test.uid}" property="testings" id="testings{test.uid}" /><label for="testings{test.uid}">{test.title}</label><br />
				</f:for>
			</fieldset>
			<fieldset>
				<f:form.submit value="Filtern" />
			</fieldset>
		</f:form>