Need to change listen.owner [php-fpm]

Hi all,

I need to change the listen.owner from root to the appropriate user.
So I saw the file "/usr/local/psa/lib/modules/python/phpinimng/phpinimng.py". In this file there is this line:

listen.owner = root

I would like to override root with the user variable, so that in every php-fpm configuration the listen.owner variable has it's own user.
If I would be able to change it here generation of all php-fpm configurations would be correct for our needs. But this is an original Plesk file,...

Need to change listen.owner [php-fpm]