# Delegates

### OnPhysicalLinkMoveStateChangedDelegate

This delegate functions similarly to the [`OnPhysicalLinkMoveStateChangedEvent`](https://cryomen.gitbook.io/navigation-link-array/classes/events#onphysicallinkmovestatechangedevent) but allows external instances to subscribe to its events. It supports subscription in both C++ and Blueprints.

{% tabs %}
{% tab title="Blueprint" %}

{% endtab %}

{% tab title="C++" %}

```cpp
/*
 * Called when agent reaches/exists Navigation link during path following.
 */
UPROPERTY(BlueprintAssignable)
	FNLAPhysicalLinkMoveStateChangedDelegate OnPhysicalLinkMoveStateChangedDelegate;
```

{% endtab %}
{% endtabs %}


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