Dataset Properties Dialog Box, Filters
Select Filters on the Dataset Properties dialog box to create filters for the dataset.
Add a new filter clause to the list.
Delete the selected filter clause from the list.
Move the selected filter up in the list.
Move the selected filter down in the list
Type or choose the expression to which you want to apply a filter. Click the Expression (fx) button to edit the expression.
Choose the data type for Value. When possible, choose a data type that matches the data type for Expression. For more information, see Filter Equation Examples (Report Builder and SSRS).
Choose the operator to use to compare the expression and the value.
Type the expression or value to use when evaluating the expression specified in the Expression box. Click the Expression (fx) button to edit the expression.