Filter Expression
Click the Generate Filter Expression button to auto generate a filter expression based on the identifiers in your table data.
Filter Expressions evaluate and return Booleans (True/False values) which determine whether records in your table are included or excluded in the process to which the filter is being applied.
Example: UnitMaterial = UnitMaterialWaste And IsNull(UnitAllocation)
Click Accept to generate a filter expression based upon the identifiers you have selected (or Cancel).