in_array member ID whitelist for group digest/subscription

// in file bp-activity-subscription.php
$allowed_users = array(1, 2);
// $this_user was or needs to be $this_user = $bp->loggedin_user->id  - gloabal $bp is null though
$this_user = '1'; // to test with hardcoded value
if(in_array("$this_user", $allowed_users)):
add_action( 'plugins_loaded', 'activitysub_load_buddypress', 1 );
endif;