Email message blank body

so I have this issue with my email script. Everything goes through in my controller except the message in the email the body is blank, can anyone tell me what I am doing wrong?

$siteSettings = $this->SiteSettings->getSiteSettings();
        $receiptEmail=new Email();
        $receiptEmail->subject('Application Test Email');
       $receiptEmail->message("test Content");

        $this->set('title','test send');
        $response = $this->render(false);
        $response->body("test send");
        }catch(\Exception $e){
          $this->set('title','test send');
          $response = $this->render(false);

disregard. The message part goes in the send function $receiptEmail->send(‘My Message’);