> None of the suggestions worked for me. I don't know what is the matter
> with
> the code. BUT this does work:
Well, I assure you they do work.
Note that your
> \def\mybox(#1,#2){%
requires
> \mybox(72,Zn)
while the original
\newcommand{\mybox}[2]{%
requires
\mybox{72}{Zn}
This is the only difference.
Cheers, Phil