org-->latex add local variables after \end{document}

[Uwe Brauer]

Hi

I have a org file that I want to export to latex but would like to add 

%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% TeX-output-dir: "/home/oub/ALLES/HGs/TFG-2020/build"
%%% End:


*after* \end{document}

If I do 
#+begin_src latex :results latex replace :exports results :eval t
%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% TeX-output-dir: "/home/oub/ALLES/HGs/TFG-2020/build"
%%% End:
#+end_src

It is added before \end{document}

Any idea how to do that?

Thanks