[syslog-ng] How to use parser

Hello Experts, Please let me know how to use parser setting. This is the syslog message. Msg1 #AA# Msg2 I want to divide this message. I expect the below. Msg1 Msg2 But It doesn't work well , though I wrote the configuration below. parser p1{ csv-parser(columns("Msg1","Msg2") delimiters("#AA#") template ("$Msg1\n$Msg2"); }; log { source(s_sys); parser(p1); destination(d_mesg); }; I check the output. The result wasn't unexpected. Msg1 #AA# Msg2 If my configuration is wrong, please let me know. Thanks, Yasu