never mind, I found it.

https://www.balabit.com/documents/syslog-ng-ose-latest-guides/en/syslog-ng-ose-guide-admin/html/reference-template-functions.html

--
Jorge Pereira

On Mon, May 8, 2017 at 7:46 PM, Jorge Pereira <jpereiran@gmail.com> wrote:
hi team,
is it possible to use if() ... else statements on syslog-ng 3.7? I am trying to do something like.

if ($value >= X)
  ......
else
  ......
--
Jorge Pereira