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  • I’ve actually managed to work this out myself. I used a different method, get_posts, and I also used meta_query to return an array and compare the page ID to the custom field. So my final code looked like this:

    <?php										$special_offers = get_posts(array(										    'post_type' => 'special_offers',										    'meta_query' => array(										        array(										            'key' => 'applies_to', // name of custom field										            'value' => '"' . get_the_ID() . '"',										            'compare' => 'LIKE'										        )										    )
    if( $special_offers ): 										    foreach( $special_offers as $offer ): 										    // Do something to display the articles. Each article is a WP_Post object.
    									    	echo "<div class='special_offer'><h3>";										    echo $offer->post_title;  // The post title										    echo "</h3><span class='offer_text'>";											echo $offer->post_content;  // The post content											echo "</span></div>";
    										    endforeach;										endif;