Filter Columns using Parameters

Hi

I have created a report which displays data from a SharePoint list. I have used a parameter to filter the matrix based on data created during a specific month.

It appears as though I only need to apply the parameter on specific columns and not the entire table.

The report displays queries logged by Clients and Sub Clients and displays the Number of Queries Created for a specific month, The Number of Queries closed during the same month, All queries that are still open (Not affected by parameter).

How do I filter only some columns using parameter? Can I do this directly in the Expression for the Text box? For example - Number of Queries created for a specific month - expression equals =Parameter!Month.Value(Count(Fields!ID.Value))

Appreciate your assistance.

Thanks

Tony