>>As I wrote in my message, I was able to find the solution by adding a dummy field, suffix, and setting a value to this field. Then adding the suffix to the ID_FIELD.
Million ways to skin a fox! BTW, quoting Carl Sagan: "... every question is a cry to understand the world. There is no such thing as a dumb question."
This idea even has a Heinlein-style Initialism: TNSTAASQ
https://idioms.thefreedictionary.com/TNSTAASQAlways something to learn IMHO, which is why I come here. - J
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1