Yes, it works for me (since months).
That's exactly, what I did:
Sections: 'Holdem Player Statistics'
Columns:
Name: player_note
Expression: if[player_real.flg_note,1,0]
Group by: Summary Type: Sum (don't know if necessary)
Statistics:
Definition:
Name: PlayerNote
Description: if there is a player-note (=1) or not (=0)
Value Expression: plyayer_note
Format:
Title: Note
Width: 30
Format Expression: /%.0f
Format Summary Expressoion: /%.0f
Hope that will help you.
If there is a way to load it up here, I will do, but I don't know how to