Use case: When saving a news istance in backend I want to manipulate values before saving to database.

• I include my hook in the following way in ext_localconf.php:

$GLOBALS[‘TYPO3_CONF_VARS’][‘SC_OPTIONS’][‘t3lib/class.t3lib_tcemain.php’][‘processDatamapClass’][]= VendormythemeHooksNewsControllerSettings::class;

• In my Hooks I have write this code to Check if the Hook is Firing but it haven’t .

  <?php
  
   namespace VendormythemeHooks;
  
    class NewsControllerSettings {
  
            public function processDatamap_afterDatabaseOperations($status, $table, $id, &$fieldArray,TYPO3CMSCoreDataHandlingDataHandler $pObj){
                echo 'Hello world ! '; 
                exit();
            }
   }
  

I can’t upgrade the version of typo3 or even the news, but I don’t know what else to try.
I hope someone can help me. Opinions are also welcome.
Thanks in advance