Unrecognized type on return of my custom blueprinatable class

Development Programming & Scripting
1

How I can return custom type from my UFUNCTION?

HEADER

#pragma once
    
#include "CoreMinimal.h"
#include "Online.h"
#include "H3D_SteamOSS.generated.h" // always be last
    
UCLASS()
class H3D_LOBBY_API UH3D_SteamOSS : public UBlueprintFunctionLibrary
{
	GENERATED_BODY()
	public:
		UFUNCTION(BlueprintPure, category = "Steam Subsystem BP")
			/**
			 * Get current Steam OSS
			 *
			 * @param no params
			 *
			 * @return IOnlineSubsystem representing the Steam OSS
			 */
			static IOnlineSubsystem* GetCurrentOnlineSubSystem_Harda();
};

CPP

#include "H3D_SteamOSS.h"

IOnlineSubsystem*
	UH3D_SteamOSS::GetCurrentOnlineSubSystem_Harda()
	{
		IOnlineSubsystem* ion = IOnlineSubsystem::Get(FName("Steam"));

		if (ion == nullptr)
		{
			UE_LOG(LogTemp, Warning, TEXT("error: unable to get Steam OSS"));
			return nullptr;
		}

		return ion;
	}

Compile error: Unrecognized type 'IOnlineSubsystem' - type must be a UCLASS, USTRUCT or UENUM

2

blueprint only accepts UObject pointer;
you could replace that with UOnlineEngineInterface;