static void OnPropertyValueChanged ( [UDataflow](API\Runtime\DataflowEngine\Dataflow\UDataflow) * Graph, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [Dataflow::FEngineContext](API\Runtime\DataflowEngine\Dataflow\FEngineContext) > & Context, [Dataflow::FTimestamp](API\Runtime\DataflowCore\Dataflow\FTimestamp) & OutLastNodeTimestamp, const [FPropertyChangedEvent](API\Runtime\CoreUObject\UObject\FPropertyChangedEvent) & PropertyChangedEvent, const [TSet](API\Runtime\Core\Containers\TSet)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * > & SelectedNodes )