Little trick with mod latestblogs

We are with a new developing, and wi need to set the background image in a div with the easyblog image (module) , the code for this is :

<?php

/**

 * @package		EasyBlog

 * @copyright	Copyright (C) 2010 Stack Ideas Private Limited. All rights reserved.

 * @license		GNU/GPL, see LICENSE.php

 *

 * EasyBlog is free software. This version may have been modified pursuant

 * to the GNU General Public License, and as distributed it includes or

 * is derivative of works licensed under the GNU General Public License or

 * other free or open source software licenses.

 * See COPYRIGHT.php for copyright notices and details.

 */



defined('_JEXEC') or die('Restricted access');



	// override itemid.

	// reset the itemid incase previously the itemid was assigned from other posts.

	$itemId = modLatestBlogsHelper::_getMenuItemId($post, $params);

	$url 	= EasyBlogRouter::_('index.php?option=com_easyblog&view=entry&id=' . $post->id . $itemId );



	$posterURL	= EasyBlogRouter::_( 'index.php?option=com_easyblog&view=blogger&layout=listings&id=' . $post->author->id . $itemId );

	$posterName	= $post->author->getName();



	$disabled = true;

	if( $params->get( 'enableratings' ) )

	{

	$disabled = false;

	}

?>

<div class="mod-item">



	<?php if( $params->get( 'photo_show') ){ ?>

		<?php if( !empty( $post->source ) ){ ?>

			<?php require( JModuleHelper::getLayoutPath('mod_latestblogs', $post->source . '_item' ) ); ?>

		<?php } else { ?>



			<?php if( $post->getImage() ){ ?>

				<div class="mod-post-image align-<?php echo $params->get( 'alignment' , 'default' );?>">

					<a href="/<?php echo $url; ?>"><div class="back-image" style="background-image: url('/<?php echo $post->getImage(')->getSource('module');?>) ; background-size: cover"></div></a>

				</div>

			<?php } else { ?>

				<!-- Legacy for older style -->

				<?php if( $post->media ){ ?>

				<div class="mod-post-image align-<?php echo $params->get( 'alignment' , 'default' );?>">

					<a href="/<?php echo $url; ?>"><?php echo $post->media;?></a>

				</div>

				<?php }  ?>

			<?php } ?>

		<?php } ?>

	<?php } ?>



	<div class="mod-post-title">

		<a href="/<?php echo $url; ?>"><?php echo $post->title;?></a>

	</div>



	<?php if( $params->get( 'showcategory') ){ ?>

	<div class="mod-post-type">

		<a href="/<?php echo EasyBlogRouter::_( 'index.php?option=com_easyblog&view=categories&layout=listings&id=' . $post->category_id . $itemId );?>"><?php echo $post->getCategoryName();?></a>

	</div>

	<?php } ?>



	<?php if( $params->get( 'showintro' , '-1' ) != '-1' ){ ?>

	<div class="mod-post-content clearfix">



		<?php if( $post->protect ){ ?>

			<?php echo  $post->content; ?>

		<?php } else { ?>

			<?php echo $post->summary;?>

		<?php } ?>



		<?php if( $params->get( 'showreadmore' , true ) ){ ?>

		<div class="mod-post-more">

			<a href="/<?php echo $url; ?>"><?php echo JText::_('MOD_LATESTBLOGS_READMORE'); ?></a>

		</div>

		<?php } ?>



	</div>

	<?php } ?>



	<?php if( $params->get( 'showratings', true ) && $post->showRating ): ?>

	<div class="mod-post-rating blog-rating small"><?php echo EasyBlogHelper::getHelper( 'ratings' )->getHTML( $post->id , 'entry' , JText::_( 'MOD_LATESTBLOGS_RATEBLOG' ) , uniqid() . '-mod-latestpost-' . $post->id , $disabled);?></div>

	<?php endif; ?>



	<!-- Author metadata -->

	<?php require( JModuleHelper::getLayoutPath('mod_latestblogs', 'default_meta' ) ); ?>

</div>

But for some reason, work fine in the first and secon post, but in the last two doesn´t wokt, we have set post to show to 4 .

Thnaks.