Expression Error in Column Group report display

Logic # 1: If Column Group: Region. Value is EQUAL to "America Hub", the Value section needs to pull "Rev_Rec Date" Field.
Logic # 2: If Column Group: Region. Value is EQUAL to "EMEA" or "AMERICA" or "ASIA", the Value section needs to pull "Order Date" field.
Below is the column group expression I have entered. However, it displays as “ERROR#” in the report output.
I am not sure why the SSRS program show an error in Column Group in Matrix report format
=sum(IIf(Fields!REGION.Value = "America Hub", Fields!Rev_Rec_Date.Value, Fields!Order_Date.Value))
Appreciate if you can help me.
Thanks,
Josey
Josey Tang

Hi Qiuyun,
Thanks for your feedback and example. Appreciated.
I have created 2 expressions. One is in Row Group and the other in Column Group in order to show different values in Row and column fields.
ROW FORMAT
Logic # 1: If Row Group: Region. Value is EQUAL to "America Hub", the Value section needs to pull "Billing Amount" Field.
Logic # 2: If Row Group: Region. Value is EQUAL to "EMEA" or "AMERICA" or "ASIA", the Value section needs to pull "Booking Amount" field.
Expression in ROW FORMAT:
=sum(IIf(Fields!REGION.Value = "America Hub", Fields!Billing_Amount.Value, Fields!Booking_Amount.Value))
COLUMN FORMAT
Logic # 1: If Column Group: Region. Value is EQUAL to "America Hub", the Value
section needs to pull "Rev_Rec Date" Field.
Logic # 2: If Column Group: Region. Value is EQUAL to "EMEA" or "AMERICA" or "ASIA",
the Value section needs to pull "Order Date" field.
Expression in “COLUMN FORMAT”:
=sum(IIf(Fields!REGION.Value = "America Hub", Fields!Rev_Rec_Date.Value, Fields!Order_Date.Value))
The Row Group expression is working properly. However the Column Group expression shows as ERROR #
I think I need to help based on the Column Group Logic # 1 and 2 above.
Josey Tang

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