---
title: "setInsertionClassDescription(_:)"
framework: foundation
role: symbol
role_heading: Instance Method
path: "foundation/nspositionalspecifier/setinsertionclassdescription(_:)"
---

# setInsertionClassDescription(_:)

Sets the class description for the object or objects to be inserted.

## Declaration

```swift
func setInsertionClassDescription(_ classDescription: NSScriptClassDescription)
```

## Parameters

- `classDescription`: The class description for the object or objects to be inserted.

## Discussion

Discussion This message can be sent at any time after object initialization, but must be sent before evaluation to have any effect.

## See Also

### Accessing information about a positional specifier

- [insertionContainer](foundation/nspositionalspecifier/insertioncontainer.md)
- [insertionIndex](foundation/nspositionalspecifier/insertionindex.md)
- [insertionKey](foundation/nspositionalspecifier/insertionkey.md)
- [insertionReplaces](foundation/nspositionalspecifier/insertionreplaces.md)
- [objectSpecifier](foundation/nspositionalspecifier/objectspecifier.md)
- [position](foundation/nspositionalspecifier/position.md)