In SSRS, tablix not picking up the text generated in a dynamic SQL for grouping

Question

In SSRS, I have written a dynamic sql in which a column is populated from a case statement. The sql query is correctly populating the column in sql result but when I use it in a tablix for creating a group and summing it by 'X' column as shown below. It does not populate at all. Rest of tablix is populating fine. Can somebody please help.

eg: The columns generated by SQL has below result. Bucket is generated by case statement. In tablix I want the first row to be grouped by Bucket and in next row sum by the x column

>  **X**   **Bucket**
>     0     NULL
>     1     Today
>     1     1-10
>     1     11-20
>     0     NULL
>     1     1-10
>     1     Today
>     1     20-30

Expected Result

> Today  1-10  11-20  20-30
>   2     2      1      1

Answer 1

Set your column grouping expression to Bucket and the detail row will simply have an expression like =SUM(Fields!X.Value) .

You don't need any row grouping