[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="MQTT") [UMQTTSubscriptionObject](API\Plugins\MQTTCore\UMQTTSubscriptionObject) * Subscribe ( const [FString](API\Runtime\Core\Containers\FString) & InTopic, [EMQTTQualityOfService](API\Plugins\MQTTCore\EMQTTQualityOfService) InQoS )