function my_custom_gallery() {

			query_posts(array(
				'post_type' => 'galeria',
				'orderby'   => 'publish_date',
				'order'    => 'ASC'

			));


			while (have_posts()) : the_post();



		//code for field with image ACF


			endwhile;



		}
		add_shortcode('mygallery-1', 'my_custom_gallery');