Custom Fields – What’s wrong with my code?

I have a custom field that contains an address for each post, but I can’t figure out how to get it to show up. I want it to appear at the end of each post, if that post has a value for address. I have Thesis, so I usually use Open Hook. If it has to be placed somewhere else, where does it go?

This is what I’ve tried so far:

add_action(‘thesis_hook_after_post’, ‘address’);

I also tried some variations of these:

Get Post Custom Values

<?php

$address_values = get_post_custom_values(‘address’);
foreach ( $address_values as $key => $value ) {
echo “$key => $value (‘address’)”;
}

?>

Get_Post_Custom
<?php

$custom_fields = get_post_custom(0);
$address = $custom_fields[‘address’];
foreach ( $address as $key => $value )
echo $key . ” => ” . $value . “”;

?>

Is there another line I need to add somewhere to make these work?