tbobker

ok yes it is add_post_meta got that working.

add_meta_box(
        'my_meta_box_id',          // this is HTML id of the box on edit screen
        'title',    // title of the box
        'show_deactivate_checkbox',   // function to be called to display the checkboxes, see the function below
        'post',        // on which edit screen the box should appear
        'normal',      // part of page where the box should appear
        'default'      // priority of the box
    );

show_deactivate_checkbox(){
  echo "<input type='checkbox' name='mycheckbox' />";
}