Loading blueprint class into level without constructors

[mcs_032]

I need to load the following Blueprint class into the level at runtime without using constructors. This is done to spawn an actor (Metahuman in this case) at runtime when a user presses a key on the keyboard.

The blueprint callable code for this is as follows

header

UCLASS(Blueprintable)
class FACEANIMATION_API UMetahumanUtil : public UObject
{
    GENERATED_BODY()
    
    UFUNCTION(BlueprintCallable, Category="Metahuman")
    static void SpawnMetahuman(AActor* CurrMH);
};

implementation

void UMetahumanUtil::SpawnMetahuman(AActor* CurrMH)
{
    UE_LOG(LogTemp, Warning, TEXT("Spawning metahuman"));
    
    FString Path = "/Game/Metahumans/Aoi/BP_Aoi.BP_Aoi_C";

    UObject* SpawnActor = Cast<UObject>(StaticLoadObject(UObject::StaticClass(), nullptr, *Path));
    UBlueprint* GeneratedBP = Cast<UBlueprint>(SpawnActor);

    UClass* SpawnClass = SpawnActor->StaticClass();

    UWorld* World = CurrMH->GetWorld();

    FActorSpawnParameters SpawnParams;
    SpawnParams.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;

    FVector Loc(-60, -10, 40);
    FRotator Rot(0, 0, 90);
    
    World->SpawnActor<AActor>(GeneratedBP->GeneratedClass, Loc, Rot, SpawnParams);
    
    UE_LOG(LogTemp, Warning, TEXT("Spawned metahuman"));
    
}

This will be used in the level blueprint as follows

This is not working because GeneratedBP variable is null.

I was hoping to get some pointers on how to do this. Most of the questions I came across on the forum use constructors for doing something similar.

Thanks.

[mcs_032]

By changing the implementation as follows, the generated blueprint class is not null anymore, and the asset is loaded

void UMetahumanUtil::SpawnMetahuman(AActor* CurrMH)
{
    UE_LOG(LogTemp, Warning, TEXT("Spawning metahuman"));
   
    UWorld* World = CurrMH->GetWorld();

    FActorSpawnParameters SpawnParams;
    SpawnParams.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;

    FVector Loc(-60, -10, 40);
    FRotator Rot(0, 0, 90);
    
    TSoftClassPtr<AActor> MetahumanClass = TSoftClassPtr<AActor>(FSoftObjectPath(TEXT("/Game/Metahumans/Aoi/BP_Aoi.BP_Aoi_C")));
    UClass* AssetClass = MetahumanClass.LoadSynchronous();
    
    UE_LOG(LogTemp, Warning, TEXT("AssetClass name is %s"), *AssetClass->GetName());
    
    World->SpawnActor<AActor>(AssetClass, Loc, Rot, SpawnParams);

    
    UE_LOG(LogTemp, Warning, TEXT("Spawned metahuman"));
    
}