[syslog-ng] Syslog-ng - UDP templates

Hi, I am trying to configure syslog-ng (running on OpenSUSE 11.0) to forward a message to another server through UDP. I would like to modify the message's format, therefore I tried to use "template()" without success. (parsing error while restarting the syslog) The version installed with this distribution is 1.6.12, and from what I understood, the feature is available in later versions (1.6rc3 ?) . Is it available in the OpenSource Edition or only in the Premium Edition ? and where can I find it ? Thanks in advance Thibaud