CodeData Property [Access 2003 VBA Language Reference]
You can use the CodeData property to access the CodeData object and its related collections. Read-only CodeData object.
expression Required. An expression that returns one of the objects in the Applies To list.
The CodeData property is available only by using Visual Basic and is read-only.
Use the CodeData property to refer to one of the following code database collections together with one of its properties or methods.