Event Manager Regular Expression

I would like to use a RegEx statement in the events-main stanza to filter on a node id.

The functionality that I am using is based on an example in the ASL Manual - Event Management Subsystem.

TEMPVAR = v|e|${RPT_LINKS} =~ "",2000.""
*1234 = f|t|TEMPVAR

But I would like to filter node IDs starting with T3 (Echolink).

The Regular Expression should be fairly simple. ([T][3].....) but it isn't obvious where to place this within the evaluation. =~ "\",2000.\""

Tom.