We set up an Universal DSM to accept TLS Syslog Windows Security events from two WinCollect 10 agents. The traffic is now encrypted but we are struggling with the Log Source Identifier Pattern - the events are classified as "Unknown Generic Event" despite carrying a WindowsLog.
How do I write the regex needed for the Log Source Identifier Pattern so I can search events the log sources sent by these two agents? The two links below have different guidance ($1 or \1; I am trying both, but nothing is coming through). Also, where is the Event Retriever?

Use As A Gateway Log Source
Set to On
Log Source Identifier Pattern
\1=([\w\d-]+)\.mydomain
$1=([\w\d-]+)\.mydomain
\1=<13>\w{3}\s\d{1,2}\s\d{1,2}:\d{1,2}:\d{1,2}\s([\w\d-]+)\s
$1=<13>\w{3}\s\d{1,2}\s\d{1,2}:\d{1,2}:\d{1,2}\s([\w\d-]+)\s
<13>Feb 15 10:03:50 LT-12345 AgentDevice=WindowsLog AgentLogFile=Security PluginVersion=WC.MSEVEN6.10.1.2.20 Source=Microsoft-Windows-Security-Auditing Computer=LT-12345.mydomain.com ...

https://www.ibm.com/docs/en/dsm?topic=options-tls-syslog-protocol-configuration
Log source identifier pattern
Thanks
------------------------------
Tom L
------------------------------