remove sidebox on just two pages

I have the sidebox whats_new on every pages. But i want to disable this sidebox at the pages "checkout_payment","checkout_confirmation"

I added ..includes/modules/sideboxes/my_template/whats_new.php

  $show_whats_new= false;

 if ($_GET['main_page'] == 'checkout_payment') {
  $show_whats_new= false;
 } else {
  $show_whats_new= true;
 }

or ```
if ($_GET['main_page'] == 'checkout_payment'){
$whats_new = false;
}

but bot codes wont work to disable the sidebox in the checkout_payment. What did I wrong?

  if ($random_whats_new_sidebox_product->RecordCount() > 0 ) {
```needs to be changed to:```
  if ($random_whats_new_sidebox_product->RecordCount() > 0 && $show_whats_new != false) {

thnx, but if i do that the sidebox dissapear on every pages not on the pages "checkout_payment","checkout_confirmation"

include your suggested code too:

  $show_whats_new= false;

 if ($_GET['main_page'] == 'checkout_payment' || $_GET['main_page'] == 'checkout_confirmation') {
  $show_whats_new= false;
 } else {
  $show_whats_new= true;
 }

:clap: wonderful great :clap:

hi there
please advice how to remove a box on top of sidebox of information. :(
website: https://www.ocfashionlover.com

thanks a lot