Choose image to be displayed

Please, use this code in carousel-horizontal-posts-content-sldier.php file line #44- 53. This will only select featured post image.

$post_link =  get_permalink($post->ID);

if($displayimage=="YES"){

			 if (has_post_thumbnail( $post->ID ) ):
			$image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' );
			endif;
			$featured_img = "<img width='115' height='115' src='". $image[0] . "' " . $attributes . " />";
			$slider_gallery.= '<a href="'.$post_link.'">'.$featured_img.'</a>';
		}

I hope this will help you.
Thanks.