I want add Expression of trigger for Windows Server.

I clicked Add button for Expression. Then, Trigger expression condition window displayed.
I selected eventlog[] item and

• Function: 'Log source of the last log entry matching parameter T, then N = 1, 0 - otherwise'
• T: TEST
• N: 0

and click Insert button.

Then, Error message ware displayed.
Error message was 'Field "paramtype" is mandatory.'.

If I selected Function: 'Event ID of last log entry matching regular expression T, then N = 1, 0 - otherwise', same error message was displayed.