# ChangedConstantNode

> Describes a single constant node that was added, or modified, paired with the categories of changes that affected it.

## Definition

* **Type:** Struct
* **Namespace:** [Unity.GraphToolkit.Editor](/engine/6000.7/script-reference/unity/graphtoolkit/editor.md)
* **Assembly:** UnityEditor

```csharp
public readonly struct ChangedConstantNode
```

## Remarks

A removed [ChangedConstantNode.ConstantNode](/engine/6000.7/script-reference/unity/graphtoolkit/editor/changedconstantnode/constantnode.md) does not have a matching [ChangedConstantNode](/engine/6000.7/script-reference/unity/graphtoolkit/editor/changedconstantnode.md).

For a usage example, see [GraphChanges](/engine/6000.7/script-reference/unity/graphtoolkit/editor/graphchanges.md).

## Properties

| Property                                                                                                      | Description                                                                                                                                                          |
| ------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [ChangeKinds](/engine/6000.7/script-reference/unity/graphtoolkit/editor/changedconstantnode/changekinds.md)   | The categories of changes that affected this constant node, as a set of [ChangeKind](/engine/6000.7/script-reference/unity/graphtoolkit/editor/changekind.md) flags. |
| [ConstantNode](/engine/6000.7/script-reference/unity/graphtoolkit/editor/changedconstantnode/constantnode.md) | The constant node that was modified.                                                                                                                                 |
| [ID](/engine/6000.7/script-reference/unity/graphtoolkit/editor/changedconstantnode/id.md)                     | The unique identifier of the constant node.                                                                                                                          |