ReportParameter Dependency Problem

Hi,

I have a bunch of code for integrating reporting services 2000 with our application, which has been running fine for quite a while. We've recently encountered a problem and i can't quite figure it out.

There is a set of code that creates controls for entering parameter values for our reports, which takes an array of ReportParameters as an argument. We loop through the parameters and create controls as appropriate. The check to see if we need to create a dropdownlist of parameters populated through a query looks a bit like this:

if (oParam.ValidValues != null)
{
//Create ddl based on the list of valid values.

}

This is where i am encountering a problem. One of our reports, that has been running fine until recently is now not getting a dropdownlist created for it's second parameter. When i run into the code, i can see that this parameter now thinks that it has a dependency on the first parameter (which it does not), and the list of ValidValues is null.

If i go into the report designer and change the order of the two parameters in the report, then it works fine, the list is populated and there seems to be no dependency. If i change it back, it is broken again. I've checked the query that populates the list, it is not parameterised and is a very simple kind of SELECT A, B FROM TABLEA. I've looked in the report parameters and i can see nothing there either.

Your help would be very much appreciated here. I am running SSRS with SP2 applied.

Paddy