Hello,

I have used a report based on OLAP datasources (cubes). And there are
some parameters defiend in the report, for example, Parameter!Year,
Parameter!Month...

When I choose the Parameter, the report column will automatically
generate data for that Parameter (drill throug?). For exmaple, the sales data
for that Year and Month.

But in column definition, I saw that the column expression is just
something like: =Fields!Sales and nothing special...

Now I need to create a similar report but I do not know how to realize
that function.

Would you please help me on that? Thanks.