How do I make the comment disappear after deleting from the database?

I can delete the comment from the database with this code, however when the page is loaded again the comment will still be there. I need to update again to disappear. How do I resolve this?

            ?php if( 'POST' == $_SERVER['REQUEST_METHOD'] ) {
                set_query_var( 'commentid1', $_POST['commentid'] );
                wp_delete_comment( get_query_var( 'commentid1'), true );    
            };
            ?
            form class=delete-comment action= method=post
               input type=hidden name=commentid value=?php comment_ID() ? / 
                p align=right
                    input type=submit value=Delete title=Delete /
                /p
            /form