Forum for users that want to write their own custom queries against the PT database either via the Structured Query Language (SQL) or using the PT3 custom stats/reports interface.
You do that in the Format Expression, with something like:
if( expression, 'call', '' )
You need to use the expression from the Value Expression of the stat in the format expression, so if the Value Expression is: (cnt_p_rfi_co / cnt_p_co) * 100 ..your Format Expression would be: if( (cnt_p_rfi_co / cnt_p_co) * 100 > 40, 'call', '' )