Ssrs using subreports

See more:

SSRS-2008

I inherited an ssrs report that calls two stored procedures,

The first proc executes and returns a value called book_type.

The second proc executes with the value assigned to book_type. So, if book type = autobiography, the second proc returns all the autobiography titles.

The rdl currently includes a Subreports that displays the results of the 2nd proc.

Is there a way to include a second table and dataset instead of a Subreports?

When I tried this, I was always prompted to enter the book_type...it never displayed the result of the first proc.

What I have tried:

Msdn search, Google search, adding a second dataset