Custom field values in admin columns

Hey

I’ve added a custom post type that’s working fine. For a final tweak I’d like to use show some of the custom field values in columns in the post manager.

this is the code i have for the columns…but i’m not sure how to get custom field values to show.

add_action("manage_posts_custom_column", "my_custom_columns");
add_filter("manage_edit-candidates_columns", "my_candidates_columns");

function my_candidates_columns($columns)
{
	$columns = array(
		"cb" => "<input type=\"checkbox\" />",
		"title" => "FAB ID",
        "name" => "Name",
		"area" => "Area"
	);
	return $columns;
}

function my_custom_columns($column)
{
    global $post;

    $cname = get_post_meta($post->ID, 'cname', true);
    $carea = get_post_meta($post->ID, 'carea', true);

	if ("ID" == $column) echo $post->ID;
	elseif ("name" == $column) echo $cname;
	elseif ("area" == $column) echo $carea;
}

the problem is somewhere with the get_post_meta…not sure what the solution would be.

any idea would be greatly appreciated

thanks in advance