Thread: How to add Custom Column to job_listing page

How to add Custom Column to job_listing page

Hi
I tried to add a custom column in the post_type=job_listing page with the following function
but failed


function add_job_listing_columns($columns) {
unset($columns['author']);
return array_merge($columns,
array('publisher' => __('Publisher'),
'book_author' =>__( 'Book Author')));
}
add_filter('manage_job_listing_posts_columns' , 'add_job_listing_columns');

thx