Set analysis (count)

[louise119]

I want to count using set analysis.
I wrote the following, but I can't get the value.

what could be wrong?

Count({<Region_ID = 3 >} Sales)

[BrunPierre · Accepted solution]

Count({<Region_ID ={3} >} Sales)

[louise119]

I tried that, but it doesn't work...

I wanna calculate like
If (Region_ID = 3 , count (Region_ID))

Count({<Region_ID ={3} >} Region_ID)

[BrunPierre]

The expression is technically correct.

Post some data and your output.

[louise119]

I tried below, it works.

=count(if(Region_ID=3, Region_ID))

[louise119]

Thank you very much for your help!