Need to view sub directorys of eventviewer

I was hapopy with this tool, but when i want to search through sub directory’s in eventviewer i cannot find the eventviewer file.

For instance:
Microsoft-Windows-WFP%4Operational.evtx

delivers nothing. I ended up printing the tmp file before it is deleted and it is always empty.

It would be great if i also can view the following event viewer logs:
Microsoft-Windows-Windows Firewall With Advanced Security/Firewall
%SystemRoot%System32WinevtLogsMicrosoft-Windows-Windows Firewall With Advanced Security%4Firewall.evtx

For the eventlogs in the root this tool just works fine!