Modifying an Instance Property
After you create or locate an instance of a class, you probably want to modify the instance. For example, you may wish to change the name of the system name stored in the local instance of the Win32_ComputerSystem class. The most common way to update an instance is to update the entire instance. For more information, see Updating an Entire Instance. The second option is to update only part of the instance. For more information, see Updating Part of an Instance.
For more information about working with classes, see Manipulating Class and Instance Information.