WP_Query and post__in

Hi, folks!

I used page_options to define my frontpage posts, and use this code to get que posts for a slide

$slide_home = get_option('posts_home-slide'); // this retuns a string like this "481,1,922'
$include = explode(',',$slide_home);
$argsSlide = array(
	'post_type'=>'any',
	'post_status'=>'publish',
	'posts_per_page'=>'-1',
	'post__in'=>$include
	);
$slide = new WP_Query($argsSlide);
  if ($slide->have_posts()):
    while($slide->have_posts()):
        $slide->the_post();
    endwhile;
   endif;
wp_reset_query();
wp_reset_postdata();

But this query did not return the 3 posts I pass in post__in and return more than three. Someone could help me?