How to make JAWS announce updates in Eclipse SWT widgets?

Question

I'd like to have announced text updates in some lable, currently I'm trying with org.eclipse.swt.widgets.Text(). And I'm trying that with JAWS(version 04.2023).

I found Snippet363 It shows an example of something similar to ARIA-LIVE(in HTML) but for SWT, but unfortunatelly it doesn't work for me.

Also I tried to change the Role in a different way than in the Snippet363:

        liveLabel.getAccessible().addAccessibleControlListener(new AccessibleControlAdapter() {

            @Override
            public void getRole(AccessibleControlEvent e) {
                e.detail = ACC.ROLE_ALERT;
                called(e);
            }
        });

That didn't work as either.

There are no detailed informatin on how that should work. But here the Java docs for the Accessible in SWT I found.

So my questions are:

1. Do I miss something from that Snippet363?
2. Do I need any additional setup/configs/props/or whatever to make it working?
3. Is there any other way to force JAWS to announce text from SWT?

Any help/advise on that much appreciated.