expression with alternate states

[#1]

I have an expression: count(distinct{GroupC}responses_id)

This works fine. But I need to have a filter NPS_Flag=1, how do I put it in this expression?

[ankit777]

Hi,

Try this

count({<NPS_Flag={1}>}distinct{GroupC}responses_id)

[#3]

count(distinct{[GroupC]<NPS_Flag={'1'}>}responses_id)