[Closed] Can't get icl_object_id to return original post ID for custom posts

function apartment_photos () {
    echo '<div id="page_featured">';
    echo the_post_thumbnail( 'fsingle' );
    echo '</div><div class="clear"></div>';
    echo '<div id="single_gallery" class="marquee">';
	$type = get_post_type($id);
	$oID = icl_object_id($id, $type, false, 'en'); // tried here to set post type to my custom post type 'listing' or 'post', neither works
	$attachments = get_children(array('post_parent' => $oID, 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order_by' => 'menu_order')); 
// when using actual original language post id as 33 instead of $oID, all works fine...
	            if ( ! is_array($attachments) ) continue;
	            $count = count($attachments);
 
	            foreach ($attachments as $ats) {
	            $atmeta = wp_get_attachment_metadata($ats->ID);
	            $atsrc = wp_get_attachment_image_src($ats->ID, array(125,80));
    echo '<a href="'. $ats->guid .'" class="lytebox" data-lyte-options="group:gal" data-title="'.get_the_title($ats->ID).'" 

title="'.get_the_title($ats->ID).'">';
    echo '<img src="'.$atsrc[0].'" width="125" height="80" title="'.get_the_title($ats->ID).'" alt="'.get_the_title($ats->ID).'">';
    echo '</a>';
}
    echo '</div>';
    echo '<div class="clear"></div>';
}