Data Property
Returns or sets data in an ADDIN field. Read/write String.
Note The data is not visible in the field code or result; it is only accessible by returning the value of the Data property. If the field isn't an ADDIN field, this property will cause an error.
Example
This example inserts an ADDIN field at the insertion point in the active document and then sets the data for the field.
Dim fldTemp As Field
Selection.Collapse Direction:=wdCollapseStart
Set fldTemp = _
ActiveDocument.Fields.Add(Range:=Selection.Range, _
Type:=wdFieldAddin)
fldTemp.Data = "Hidden information"