by WhiteRider » Sat Apr 21, 2012 8:38 am
That shouldn't be necessary for an expression like that - the Variable workaround is only needed for text stats like those using the Player name.
Here you should only need the following as a column - you don't need to check the hand ID.
sum(if[tourney_holdem_blinds.amt_bb = 20 AND position = 8, 1, 0])