SSRS expression count

Question

I can use expression =count(Fields!xxx.value, "DataSet1") and return the total count.

But I have a field with Active and Not active and want to count for record with active. I use expression =Count(IIf(Fields!xxx.Value = "Active", 1, Nothing)) and it will not work.

It said "the value expression for textbox uses an aggregate expression without scope. a scope is requiered for all aggregates use outside od a data region unless the export contains exactly one datadset"

Answer 1

You have two problems.

1: you need to include the "DataSet1" scope in your field definition, like you did in the count which worked.

2: instead of doing a count on your IIF statement, do a SUM of IIF([Condition Is True],1,0)