A String value representing the name of the new format.
Index
Zero based index of the position to insert the format. A value of –1 appends to end of the collection.
Remarks
The user should retrieve the item's object to define the individual properties of the format. The user may not insert a format before a predefined (ReadOnly) format. Check the initial Count value to determine the end of the predefined list. If the method fails, an error is raised. For more information, refer to the Error Codes.