How to work with two tables?

Question

CakePHP

My goal is to first check if there is a value in one table, then write the data to another table, I do this:

$this->Cabinet->useTable = 'accounts';
      $subjectInfo = $this->Cabinet->find('all',[
          'conditions' => [
            'temp_login' => $subject
          ]
        ]);
      if(!$subjectInfo)
        return 0;

$this->Cabinet->useTable = 'messages';
      $this->Cabinet->create();
      $this->Cabinet->set([
          'userIdFrom' => 0,
          'loginFrom' => $tempLogin,
          'loginTo' => $subject,
          'message' => $message,
          'deleteAfterRead' => $deleteAfterRead
        ]);
      $this->Cabinet->save();

But it does not work, how to be?