Change/filter the Ninja Forms redirect hook

ninja_forms_filter_redirect_url.php

<?php

function nf_filter_redirect_url( $action_settings, $form_id, $action_id, $form_settings ) {
  
  if( $form_id !== <id> ){
  return $action_settings;
  }

  // more conditions can be added as needed
  // doc: https://developer.ninjaforms.com/codex/submission-processing-hooks/ 

  $my_variable = 'something';

  $action_settings['redirect_url'] = $action_settings['redirect_url'] . "&param=" . $my_variable;

  return $action_settings;

}
add_filter( 'ninja_forms_run_action_settings', 'nf_filter_redirect_url', 10, 4  );

Hey, thank you for this!
Just a little note, it works but in line 5 it should be "!=" instead of "!=="