How to: Show Hidden Datasets
Reporting Services automatically creates datasets to populate the valid values for a parameterized query for multidimensional data sources. By default, these datasets do not appear in the Report Data pane. To display a hidden dataset, you must toggle the Report Data pane view.
To display hidden datasets
In Design view, right-click an empty area of the Report Data pane, and then click Show Hidden Datasets.
Note
If the Report Data pane is not visible, click Report Data on the View menu.