Updating all fields does not work

Updating all fields does not work
I get the following AppleScript from a link in Googlegroup chat.

tell application “Microsoft Word”

    • Get a reference to the main header in the current document
      set refHeader to get header of section 1 of active document index header footer primary
    • Update every field in the header
      update field (every field of text object of refHeader)
    • Update every field in the document
      update field every field of active document
      end tell

The link of the script is: https://groups.google.com/g/microsoft.public.mac.office.word/c/yLDfQWdnfEg/m/apniyZh4j5QJ

My problem is that this script work well for sometimes but now it does not work. So, what have i done wrong to the script ?

Any assistant please.