SelectMultiple, Generator and ordering items

Bowker

We are using a <Generator...> to populate an available list of items in a multiple select for a component. I have successfully added all the items I want to the list, but they are being sorted alphabetically.

It appears that the "Order='xx'" attribute on the Option will prevent sorting, but it's not working. When I look at the "view source" for the form the options are there (as expected) but the Order attribute is not.

Element option = base.addElement("Option");
option.addAttribute("Order", counter.increment());
option.addElement("Display").addCDATA(indent + display);
option.addElement("Value").addCDATA(id + ":" + display);

If I write out option.attribute("Order") it's set correctly, but it's not there when the the form is displayed.

Any guesses?