I have sub-report:  

Shared stringvar O;

if trim({ICITEMO.VALUE}) = "CS" then

    O := "B"

Else

    O := " ";

And formula in main- report: Shared stringvar O;   O

In main report I am trying to exclude all items with optional field value “B”. Sub- report is working correctly but not formula in main report, which is giving me false results.

Any tips how to solve this issue?

Thanks