[Solved] Entity Query field condition for Webform submissions

Janec Poppeliers Asks: Entity Query field condition for Webform submissions
I’m trying to query webform submissions based on a field value. The field is called “ticket_for”. Somethings I tried and do not work:

Code:
    ->condition('ticket_for',$adnummer)
    ->condition('webform_submission_data:ticket_for',$adnummer,'CONTAINS')
...

What kind of condition should I be using in a query like this?

Code:
$query = Drupal::entityQuery('webform_submission')
->condition('webform_id', 'ticket')
->condition('entity_id', $eventID)
->condition('webform_submission_data:ticket_for',$adnummer,'CONTAINS');

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