TYPO3 v11 persistence.storagePid is ignored - typo3

Question

I have an TYPO3 Extbase extension with TYPO3 11.
My problem is, that every item is shown.
In my plugin there is a Flexform Field for the storagePid. But the plugin completely ignored this settings and every time lists all items.
How can I tell my extension that it should only load items from the selected page?
I have tried to set this:
public function getItems()
{
$table = 'TABLE';
$query = $this->itemRepository->createQuery();
$query->getQuerySettings()->setRespectStoragePage(true);
return $query->execute();
}
But that doesn't help.
This doesn't change anything in the repository
public function initializeObject() {
/** #var Typo3QuerySettings $querySettings */
$querySettings = GeneralUtility::makeInstance(Typo3QuerySettings::class);
$querySettings->setRespectStoragePage(TRUE);
$this->setDefaultQuerySettings($querySettings);
}

Answer 1

I am assuming you mean what you set in the default field tt_content.pages and tt_content.recursive.
Here is an example how to get the page IDs from the fields: https://github.com/TYPO3/typo3/blob/11.5/typo3/sysext/felogin/Classes/Controller/AbstractLoginFormController.php#L35-L50
And then you would set that for your Extbase query:
$querySettings = $this->myRepository->createQuery()->getQuerySettings();
$querySettings->setStoragePageIds(...);
Background:
Here is a great write-up how naming a Flexform field persistence.storagePid would give you that, too https://www.derhansen.de/2016/02/how-extbase-determines-storagepid.html