wizard behavior

I am trying to use Wizard Behavior Extension. I wonder if such a code make sense (I am using CActiveRecord):

public function myWizardProcessStep($event) {				

	$data = array();


	switch ($event->step) {

		case "first" : 

			$d['form'] = "_contactform";

			$d['model'] = new Contact();			

			$data[] = $d;

			

			$d['form'] = "_addressform";

			$d['model'] = new Address();

			$data[] = $d;

			

			//$model->attributes = $event->data;			//<img src='http://www.yiiframework.com/forum/public/style_emoticons/default/huh.gif' class='bbc_emoticon' alt='???' />

			break;

                case "second":

                       ...

       }


       if (isset($_POST['Address']) && isset($_POST['Contact'])) { //first step was posted

           $model->attributes = $_POST['Address'];

           //@todo: validation

	   $event->sender->save($model->attributes);		

	   $event->handled = true;    

       }

       else {...}


     $this->render('wizard', 

		array(	'event'=>$event

			, 'data'=>$data

			));    

And my wizard.php:

<?php $form = $this->beginWidget('GxActiveForm', array(

		'id' => $event->step.'-form',

		'enableAjaxValidation' => true,

	));

?>


<?php	

	if (isset($data) && !empty($data))

	{

		foreach ($data as $key=>$d)

		{

			$this->renderPartial($d['form'], array(

				'model' => $d['model']

				,'form'=>$form

			));

		}

	}			

?>

<?php if ($event->$step != 'first') //@todo: stepNum != 1 <img src='http://www.yiiframework.com/forum/public/style_emoticons/default/huh.gif' class='bbc_emoticon' alt='???' /> 

{	

   echo CHtml::htmlButton(Yii::t('app', 'Previous'), array('class' => 'button', 'type' => 'submit', 'name'=>'previous'));

}


//@todo: last step->submit button

echo CHtml::htmlButton(Yii::t('app', 'Next'), array('class' => 'button', 'type' => 'submit', 'name'=>'next'));


$this->endWidget();


?>