Embedding text from file via a relative link to the file in MS Word

This answer describes how to embed a text file via a link to the file in MS Word as follows:

1. Place your cursor where you want the file inserted


2. Press Ctrl+F9


3. Type { INCLUDETEXT "C:\\path\\to\\file.txt" \c AnsiText }. Do not type the brackets. Do type the double-backslashes.


4. Press F9

I would like to know if it is possible to use a relative link. In the example the link is absolute.

I have tried using the filename field ({INCLUDETEXT "{FILENAME \\p}\\..\\..\\header.txt"}) as suggested at www.msofficeforums.com, but it didn't wrok for me using MS Office Pro 2016.