Multiple PHP versions using PHP-FPM


I'm having some difficulties to achieve the goal mentioned in the subject.
I have running both 5.6 and 7.2 php-fpm versions, but my tests are rendered
using only 7.2 whichever the VH tested. One of them is configured to run
php-fpm 5.6 and the other to run php-fpm 7.2

VH configuration

* <Directory /> Options FollowSymLinks
AllowOverride None </Directory> <Directory
/var/www/php5.6> Options Indexes FollowSymLinks
MultiViews AllowOverride All Order
allow,deny allow from all <IfModule mod_fastcgi.c>
AddHandler php5.6-fcgi .php Action php5.6-fcgi /php5.6-fcgi
Alias /php5.6-fcgi /usr/lib/cgi-bin/php5.6-fcgi
FastCgiExternalServer /usr/lib/cgi-bin/php5.6-fcgi -socket
/run/php/php5.6-fpm.sock -pass-header Authorization <Directory
"/usr/lib/cgi-bin"> Require all granted </Directory>
</IfModule> </Directory>*

PHP 5.6 pool

*[php5.6] user = www-data group = www-data listen =
/run/php/php5.6-fpm.sock listen.owner = www-data =
www-data listen.mode = 0660 pm = dynamic pm.max_children = 5
pm.start_servers = 2 pm.min_spare_servers = 1 pm.max_spare_servers =
FPM Status

*# systemctl status php5.6-fpm.service● php5.6-fpm.service - The PHP 5.6
FastCGI Process Manager Loaded: loaded
(/lib/systemd/system/php5.6-fpm.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2017-12-05 09:03:01 -03; 27s ago
Docs: man:php-fpm5.6(8) Main PID: 28208 (php-fpm5.6) Status: "Processes
active: 0, idle: 4, Requests: 0, slow: 0, Traffic: 0req/sec" CGroup:
/system.slice/php5.6-fpm.service ├─28208 php-fpm: master process
(/etc/php/5.6/fpm/php-fpm.conf) ├─28209 php-fpm: pool
php5.6 ├─28210 php-fpm: pool php5.6 ├─28211 php-fpm:
pool www └─28212 php-fpm: pool www*
Any clue?