BuddyPress.org

Ok so here is my code for adding an activity feed on the submission of a form i have. NOthing happens what so ever on the form submission. Can anyone help?

Im using wordpress 3.5 and buddpress version 1.6.2

$project_link = 'http://www.example.com/member/'.$user_name.'/portfolio/view/?project='.$project_id.'';
	
$params = array(
    'action' => 'new-project',
    'content' => 'here is a new activity',
    'primary_link' => $project_link,
    'component' => 'my_component',
    'type' => 'my_type',
    'user_id' => $bp->loggedin_user->id,
    'item_id' => $bp->displayed_user->id
);
do_action( 'bp_activity_add', $params );