$event = Mage::getModel('core/event')->getData('my_event');
$event = Mage::getModel('core/event')->setData('my_data', $data)->setData('my_event', $eventData);
$myEventData = $event->getData('my_event');Description: This example retrieves the data associated with the "my_event" key from the event object. Package Library: Magento's core library.