# nullKeyEntryIndices

> The serialized array indices of the null-key placeholder rows that the Inspector shows but the live dictionary excludes.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public int[] nullKeyEntryIndices { get; }
```

### Remarks

The Inspector keeps a row with a null key so a user can assign a valid key to it, but a null key can't exist in the runtime Dictionary, so Unity excludes these rows from the live dictionary. The indices are positions in the dictionary's underlying serialized array of key/value pairs, and are stable across Inspector re-sorts. This array is empty when the dictionary has no null-key rows.