wp_insert_post doesn’t insert data for added columns

Hello forums

I have an issue with the wp_insert_post() function. I added 2 additional columns in the wp_post table via phpmyadmin namely videoFile and videoThumb. But when I tried to enter some data into it the wp_insert_function doesn’t enter it. Is the function only applicable to default wordpress wp_post columns?

` if(isset($_POST[‘submit’])){

$my_post = array();
$my_post[‘post_title’] = $_POST[‘title’];
$my_post[‘post_content’] = $_POST[‘content’];
$my_post[‘post_status’] = ‘publish’;
$my_post[‘post_author’] = 1;
$my_post[‘post_category’] = array(4);
$my_post[‘videoFile’] = $_POST[‘flv’];
$my_post[‘videoThumb’] = $_POST[‘thumb’];

wp_insert_post($my_post);
$id = wp_insert_post($my_post);
echo $id;

}`

thanks I’m kinda stuck