[BEST PRACTICES ?] Check Process / Services

Hi everybody, 

I’m new in Centreon’s world (and to the world of monitoring).

In my Centreon, I’ve many hosts where I monitor processes or services (Windows). 

What is the best practice for checking processes?

Currently, I have 1 check per service, like this:

/usr/lib/xxx/xxx//centreon_windows_snmp.pl --plugin=os::windows::snmp::plugin --mode=service --hostname=1.2.3.4 --snmp-version='2c' --snmp-community='public'  --service='service_name1' --warning= --critical= --state='' --regexp

             Result : OK: Service 'service1' state is 'active' [installed state: 'installed']

/usr/lib/xxx/xxx//centreon_windows_snmp.pl --plugin=os::windows::snmp::plugin --mode=service --hostname=1.2.3.4 --snmp-version='2c' --snmp-community='public'  --service='service2' --warning= --critical= --state='' --regexp
              Result : OK: Service 'service2' state is 'active' [installed state: 'installed']

etc…

I’ve tried to use just one command, with this syntaxe : 

​​​​​​​/usr/lib/xxx/xxx//centreon_windows_snmp.pl --plugin=os::windows::snmp::plugin --mode=service --hostname=1.2.3.4 --snmp-version='2c' --snmp-community='public'  --service='”service_name2””service_name3””service_nameXXXX”' --warning= --critical= --state='' --regexp

But the result is: OK: | 'services.total.count'=0;;;0; 'services.active.count'=0;;;0;.
And if I stop a service, Centreon says 'Everything is OK'.

So, how do we really go about it? 

Thanks in advance!