I am having the same problem I think but I only have one parameters.

The dataset is populated with the following sql:

SELECT *

FROM Course_Lesson

WHERE Course_System_ID= @Course_System_ID

The @Course_System_ID parameters is pointing to =Parameters!course_system_ID.Value

Parameters!course_system_ID.Value is a reportParameter with its available values property set to a dataset being populated by this sql:

SELECT * FROM COURSE

When I run the query my values don't show up. When I try to deploy the query I get an error:

c:\documents and settings\petteysk\my documents\visual studio projects\report project6\report project6\On-Demand Attendance Report (by User) TestReport.rdl The report parameter ‘LessonTitle’ has a DefaultValue or a ValidValue that depends on the report parameter “course_system_ID”. Forward dependencies are not valid.

Any Ideas?