Can't pass an array

I think I got it.
had to add:

$session = WP_Session::get_instance();
echo '<pre>';
$data = $session->toArray();
print_r($data);
echo '</pre>';

on page 2.

Cool.
Thanks for the plugin, very useful!

Got a solution.Updating here,may be it will help someone oneday. :

if(isset($_POST['id']))
		{
		echo "<h2 id='bookingResult' > You are successfully added to your Cart </h2>"."ID=".$_POST['id'];
		$wp_session = WP_Session::get_instance();

			if(isset($wp_session['ym_cart']) && !empty($wp_session['ym_cart']))
						{
						$temp_array = $wp_session['ym_cart']->toArray();
						array_push($temp_array,$_POST['id']);
						$wp_session['ym_cart']=$temp_array;
						}
					else
						{
						$wp_session['ym_cart']= array();
						$wp_session['ym_cart'][]=$_POST['id'];
						}

	//	print_r($wp_session['ym_cart']);
		echo '<pre>';
$data = $wp_session['ym_cart']->toArray();
print_r($data);
echo '</pre>';

	    }