need advice

In After record added event store the value in a session

$_SESSION["last_added_category_name"] = $values["document_category_name"];

And in the Default Value for this field add $_SESSION["last_added_category_name"]

And if you need it to preserve, instead of session store it in a table and retrive it in Default Value (it accepts PHP code)

For example Table structure:

table_name field_name last_value

thank you very much. Does it works also with multiselect fields?

Regarding multiselect fields, I don't know, didn't try it out.

I confirm it works with multiselect fields. Thanks