Missing ComboBox Event?

Question

Here's a mystery for you all to help me solve. A series of
three combo boxes are bound to HTTPService data providers. When
combo box #1 is clicked, it modifies the URL for combobox #2, which
is updated, and so on.
Now here's the problem. When the service.send() method is
called for the dataProvider for a combobox, the data changes (and,
thus, the selectedItem changes), but no "change" event is ever
fired. The asynchronous nature of these updates also precludes
simply calling send(), checking the value of the selectedItem,
etc...
Any insights welcomed. I looked at the source code for the
ComboBox in Flex, and it didn't provide any obvious answer.
I'd love to have a synchronous (with timeout) option for
HTTPService, though! I have come across literally dozens of use
cases where this would be nice to have...

Answer 1

The change event only fires on user interaction. The, i
think, "valueCommitted" event fires on programmatic changes.
But in your case, I think you should use a reault handler to
sync the selected item when the dta call returns.
Tracy