How to: Show Hidden Datasets for Parameter Values for Multidimensional Data (Report Builder 3.0 and SSRS)
Your report might include automatically-generated datasets (also known as hidden datasets) that do not appear by default in the Report Data pane. These datasets are created in the following ways:
In some query designers for multidimensional databases, you can specify fields to filter on in the filter area of the query pane, and select whether to create a query parameter for the filter. If you select the parameter option, report datasets are automatically created to provide valid values for the report parameter.
If you import a query based on multidimensional databases, you might also include hidden datasets in your report.
Hidden datasets are not available to use from a wizard.
You can change the view in the Report Data pane to display all datasets in the report.
You can create and modify report definitions (.rdl) in Report Builder 3.0 and in Report Designer in Business Intelligence Development Studio. Each authoring environment provides different ways to create, open, and save reports and related items. For more information, see Designing Reports in Report Designer and Report Builder 3.0 (SSRS) on the Web at microsoft.com.
To display hidden datasets
In the Report Data pane, right-click the Datasets folder, and then click Show Hidden Datasets.