CiviCRM Community Forums (archive)

I open event form with event_id = 10. Then open second event form with event_id = 20 in separate tab. Then return into form #1 with id = 10 and make submit. Into hook_civicrm_validate I try this:
$id = $form->getVar('_id');

$id equal 20. I think it is not stable decision to transfer event_id through session. Better way is hidden input with event_id.