Returns an object that represents either a single PivotTable field (a PivotField object) or a collection of all the fields (a PivotFields object) that are currently not shown as row, column, page, or data fields. Read-only.
expression.HiddenFields(Index)
expression Required. An expression that returns a PivotTable object.
Index Optional Variant. The name or number of the field to be returned (can be an array to specify more than one field).
Remarks
For OLAP data sources, this property always returns an empty collection.
Example
This example adds the hidden field names to a list on a new worksheet.
Set nwSheet = Worksheets.Add
nwSheet.Activate
Set pvtTable = Worksheets("Sheet2").Range("A1").PivotTable
rw = 0
For Each pvtField In pvtTable.HiddenFields
rw = rw + 1
nwSheet.Cells(rw, 1).Value = pvtField.Name
Next pvtField