Thesis hooks appear to not be working

Hey,

I am “rocking” thesis 1.8 and am trying to get thesis to render each page a little differently by using a custom template inserting functions etc based on this tute however I do not seem to be having much luck. What am I doing wrong?

function home_pagecustom() {
/* check to see if homepage. has to happen inside the function */
if (is_home() || is_front_page())  {
?>
	<h1>I iz in ur hompage homing ur pagez</h1>
<?php } }

/* Now we tell Thesis to use the home page custom template */

remove_action('thesis_hook_custom_template', 'thesis_custom_template_sample');
add_action('thesis_hook_custom_template', 'home_pagecustom');

Thanks in advance