Exclude logs to Syslog

Hi Team,

We are trying to use the free style and exclude the traffic from the logs. Though we configured using the below link we still see the logs in the syslog. May i know if this config is correct at all?

Configuring advanced syslog free-style fi... - Fortinet Community

We need to exclude complete subnet. 

config log syslogd filter
config free-style
   edit 1
     set category traffic
     set filter "srcip 10.0.0.0 255.255.255.0"
     set filter-type exclude
   next
end
end