The Events Calendar hompeage Shortcode – customize thumbnail size

Hi !

I have a website with the enfold theme and The Events Calendar plugin.

I figure that the thumbnail for the next event are define in the file enfold/config-templatebuilder/avia-shortcodes/events_upcoming.php function shortcode_handler().

I have a simple question. I want to change the type of thumbnail “square” by “portfolio-small” in

$image = get_the_post_thumbnail($entry->ID, 'square', array( 'class' => 'av-upcoming-event-image' ));

So in my functions.php of my child-theme I have add :

	add_action( 'shortcode_handler', 'homepage_agenda' );
	
	
	
		/**
		 * Frontend Shortcode Handler HOMEPAGE AGENDA
		 *
		 * @param array $atts array of attributes
		 * @param string $content text within enclosing form of shortcode element
		 * @param string $shortcodename the shortcode found, when == callback name
		 * @return string $output returns the modified html string
		 */
		function homepage_agenda($atts, $content = "", $shortcodename = "", $meta = "")
		{
			$atts =  shortcode_atts(array(
								 'categories' 	=> "",
								 'items' 		=> "3",
								 'paginate' 	=> "no",
								 
                                 ), $atts, $this->config['shortcode']);
			$output = "";
			$posts 	= $this->query_entries( $atts );
			$entries= $posts->posts;
			
			if (!empty($entries))
			{	global $post;
				
				$default_id = $post->ID;
				$output .= "<div class='av-upcoming-events ".$meta['el_class']."'>";
				foreach($entries as $entry)
				{	
					$class  = "av-upcoming-event-entry";
					$image  = get_the_post_thumbnail($entry->ID, 'portfolio_small', array( 'class' => 'av-upcoming-event-image' ));
					$class .= empty($image) ? " av-upcoming-event-with-image" : " av-upcoming-event-without-image";
					$title  = get_the_title($entry->ID);
					$link	= get_permalink($entry->ID);
					
					$post->ID = $entry->ID; //temp set of the post id so that tribe fetches the correct price symbol
					$price  = tribe_get_cost( $entry->ID, true );
					$venue  = tribe_get_venue( $entry->ID );
					$post->ID = $default_id;
					
					$output .= "<a href='{$link}' class='{$class}'>";
					
		if($image)  $output .= $image;
					$output .= "<div class='av-upcoming-event-data'>";
						$output .= "<h4 title='av-upcoming-event-title'>{$title}</h4>";
							$output .= "<div class='av-upcoming-event-meta'>";
							$output .= "<span class='av-upcoming-event-schedule'>".tribe_events_event_schedule_details($entry)."</span>";
				if($price)	$output .= "<span class='av-upcoming-event-cost'>{$price}</span>";
	if( $price && $venue )	$output .= " - ";	
				if($venue)	$output .= "<span class='av-upcoming-event-venue'>{$venue}</span>";
							$output .= apply_filters('avf_upcoming_event_extra_data', "", $entry);
							$output .= "</div>";
						$output .= "</div>";
					$output .= "</a>";
				}
				
				if($atts['paginate'] == "yes" && $avia_pagination = avia_pagination($posts->max_num_pages, 'nav'))
				{
					$output .= "<div class='pagination-wrap pagination-".TribeEvents::POSTTYPE."'>{$avia_pagination}</div>";
				}
				
				$output .= "</div>";
			}
			
			
			
			return $output;
		}

Is that correct ? The thumbnail stay in square size (180px by 180px). If i change directly in the events_upcoming.php file it’s work. But i want to do it properly.

Thanks for your help and time

Regard