Chart.ProtectData Property (Excel)
True if series formulas cannot be modified by the user. Read/write Boolean.
Syntax
expression .ProtectData
expression A variable that represents a Chart object.
Remarks
This property is not persisted when the file is saved. If you set this property to True and then reopen the file, it will no longer be set to True.
Example
This example protects the data on embedded chart one on worksheet one.
Worksheets(1).ChartObjects(1).Chart.ProtectData = True