View an appt

[mzblue]

Hello, all! I'm working on my first Zimlet. I'm pretty deep into this first one (about 400 lines so far) but have been stuck at this point for a few days.

I have an HTML button. When it is clicked, I want it to bring up the Zimbra appointment editor for an appointment of a given unique ID, which will be specified as a param for the function that is called in the HTML button's onclick event.

How can I get it to bring up the appointment editor?

[mzblue]

So far, I've been able to get the appointment composer to come up, but still can't figure out how to load the appointment data.

MyZimlet.showAppt = function (apptUid) {
  var apptComposeController = AjxDispatcher.run("GetApptComposeController");
  if (apptComposeController) {
    var appt = new ZmAppt();
    apptComposeController.show(appt);
  }
};

I tried

  if (apptComposeController) {
    var appt = new ZmAppt();
    appt.getById(apptUid);
    apptComposeController.show(appt);
  }

but it does the same thing as the first code block above: appointment editor appears but it is blank.

Anyone know how to load the data into the appointment composer?