Update MetaKey from FrontEnd Submission Form Wordpress

Update MetaKey Value Wordpress

function wpufe_update_post_price( $post_id ) {
$price = get_post_meta( $post_id, '_price', true );

update_post_meta( $post_id, '_regular_price', $price );
}

add_action( 'wpuf_add_post_after_insert', 'wpufe_update_post_price' );
add_action( 'wpuf_edit_post_after_update', 'wpufe_update_post_price' );