# Classification

## How to Change the Value Status of a Class

| ### What to do:
| To work through this example, you must have completed the examples Fill the Attribute Pool, Assign Attribute Values to Attributes for Numeric Inputs, Create a Class and Assign Attributes to a Class.
| Select Start > Classification > Classes. The Class mask is opened.
| Search for the class CLS-1100 Wood screws.
| Select the Attributes tab. The attributes assigned to the class are shown.
| Mark the attribute Thread diameter. The form Attributes is opened.
| Click the Attribute values button. The list of attribute values is displayed.
| Select the value with the sequence number 10.
| Click on . Now, the value is no longer available for the class.
| Inactive -> The attribute value cannot be used for class Active/Prototype -> Attribute value can be used for class
| Update the list with . The value is no longer displayed in the value list.
| Click on the Show all values button to display all values of an attribute (including the ones that are not released for the class).
| After the attribute value is set to Inactive, it is possible to delete the attribute from the class.