Querying children custom post types

I have a custom post type called “Club” I also have a child custom post type for Clubs called “Project”

I want to display the children (Projects) on the single page of the parent (Club).

At the moment, the query displays all children (Projects) on all of the Parents single pages (Clubs). Where am I going wrong?

$args = array('child_of' => $post->ID;  'post_type' => 'project', 'posts_per_page' => 120 );
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post();

Thanks

Luke

http://ww.wp.xz.cn/extend/plugins/types/