related projects/donations

Hello. Im trying to pull posts using a wordpress query to display some posts on the home page….

Im using this code

<?php 
query_posts(array( 
'post_type' => 'form',
'showposts' => 10 
) );  
?>
<?php while (have_posts()) : the_post(); ?>
<h2><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h2>
<p><?php echo get_the_excerpt(); ?></p>
<?php endwhile;?>

Ive tried donations and forms also… what is the post_type for the donations forms called so that i can pull related posts?

Thanks in advance for the help, and thank you so very much for the amazing plugin.

Best