problems with mod_rewrite

[hendry]

It looks like I have some problemens with the mod_rewrite of Apache 2.

When trying to check if it's running i use the command:

apache2 -M

I receive the error: apache2: bad user name ${APACHE_RUN_USER}

When checking /etc/apache2/envvars I have

export APACHE_RUN_USER=www-data
export APACHE_RUN_GROUP=www-data

Any ideas if this is a problem for the rewrite module not working?