AllowedRowsExpression Element (ASSL)
Contains a Data Analysis expression (DAX), of Boolean type, which defines the contents of the parent element.
For the CellPermission element, the Expression element contains a logical MDX expression that identifies cells applicable to the rights indicated by the Access element of the CellPermission element. If the value of an Expression element for a CellPermission element is empty, the CellPermission element is ignored.
For the StandardAction element, the Expression element contains an MDX expression that represents the contents of the action. If the value of an Expression element for a StandardAction element is empty, the StandardAction element is ignored.