does anyone know if it is possible to trigger a send using a Smart Capture form in Cloud Pages?

I see this in the html tab:

      window.ScForm.init({"gearID":"fmgde7d9ecj","smartCaptureFormID":0,"sourceKey":"JB_Fac_Reactor","source":"dataExtension","triggeredSend":"","confirmationMessage":"Thank you for your submission.","buttonText":"Submit","buttonStyles":"","buttonAlign":"text-align: center","formStyling":""});
  };

Where it says "triggeredSend":"", I guess it should be possible to add a send definition. I have tried with the "customer key" of the send definition (which is the same as the definition name) but nothing happens.

Before troubleshooting more, does anyone know if triggered sends at all works yet (in Cloud pages)?

Thanks :-)