How to update a default-ref value?

Hi experts
I used default-ref.
How can I trigger that it will be updated when the “father” value is changed?
(when I didn’t configured it yet)

What do you mean by “trigger”? The default value takes effect whenever you try to get the leaf value, but there is no notification going out when the default value given by tailf:default-ref changes. That’s actually one of reasons why using tailf:default-ref might not be always a best idea - any application that is unaware of this annotation might be confused that the leaf value “automagically” changes.

Hi Martin
Thanks for your answer