Virus Scan seafile pro 6.05

Hi togheter,
I would like to set up virus scan. now i installed clamscan on centos.
I added this line as described here…to opt/seafile/conf/seafile.conf

scan_command = clamscan
virus_code = 1
nonvirus_code = 0
scan_interval = 2

Now if i run ./pro/ virus_scan in opt/seafile/seafile-server-latest it seems to work.
But how can i run it automatic? I downloaded to test but it seems not to check automatic after e.g. 2min.
Many thanks in advance

Please excuse. Works flawlessly.
restart and it works :flushed: