Fabrice Couvreur schrieb am 17.04.2021 um 16:30:
> Hi,
> This is going to be difficult to explain because the code below works 
> but in a project with many components does not.Actually the macro does 
> not work in the definition environment in my project but in the same 
> environment of this simple code yes.Thank you for your possible help.

Without more information or a better example there is nothing which can 
be done.

It's possible you have multiple definitions for the command in your 
style file,
you can also try if adding \usebodyfont[stixtwo] (or 
\definebodyfont[...pt] when
you use a unconventional font size) to your setups.

Wolfgang