Adding Nav Items to Buddy Press Adminbar

HI,

I've gone through the forum and thought I found a solution to this but it's not working. I added the following code to the end of my functions.php file for the Buddy Corporate theme:

function add_more_nav() { ?>
<li><a href="http://112daychallenge.net/submit-blog-post/">Submit post</a></li>
<?php
}
add_action('bp_nav_items','add_more_nav');

Did I miss something out?