Cannot make NewObject from array of class

Development Programming & Scripting
1

Hello !

I am trying to spawn class from an array of said classes and so far it has not been working at all and that’s an understatement.
Basically I just have an abstract class and I am inheriting from this class so I can have different effect I can apply to my actor from a list. I have the setup working in blueprint but it’s cleaning/optimising time and I want to try to put it in C++ since I am learning right now.

Here is my abstract class :

#pragma once

#include "CoreMinimal.h"
#include "UObject/NoExportTypes.h"
#include "BaseSpellEffector.generated.h"


UCLASS(Blueprintable, abstract)
class POWER_API UBaseSpellEffector : public UObject
{
	GENERATED_BODY()

public:
	UFUNCTION(BlueprintCallable)
		virtual void transform(TArray<FVector>& positions) { UE_LOG(LogTemp, Log, TEXT("Please work")); }
};

Here is my child class :

#pragma once

#include "CoreMinimal.h"
#include "SpellSystem/BaseSpellEffector.h"
#include "SpellEffectSpawnCircle.generated.h"

/**
 * 
 */
UCLASS(Blueprintable)
class POWER_API USpellEffectSpawnCircle : public UBaseSpellEffector
{
	GENERATED_BODY()

public:
	void transform(TArray<FVector>& positions) override;
};

Here is the .cpp :

#include "SpellEffectSpawnCircle.h"

void USpellEffectSpawnCircle::transform(TArray<FVector>& positions)
{
	for (FVector& pos : positions)
	{
		pos += FVector(0.f, 1.f, 0.f);
		UE_LOG(LogTemp, Log, TEXT("It's working"));
	}
}

My container class has this property :

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Meta = (ExposeOnSpawn = true))
		TArray<TSubclassOf<UBaseSpellEffector>> spellEffects;

And the function where I am trying to create the classes is :

void ASpellContainer::BeginPlay()
{
	Super::BeginPlay();
	
	for (auto& effect : spellEffects)
	{
		//UBaseSpellEffector* newEffect = Cast<UBaseSpellEffector>(effect); 
		UBaseSpellEffector* newEffect = NewObject<UBaseSpellEffector>(this, effect->StaticClass());
		//newEffect->transform(spellPositions);
	}
}

I have tried several different versions of NewObject call and I get the message “Class must be a child of BaseSpellEffector”. I checked the name of the class and it indeed return my child class but effect->StaticClass() seems to return only class().

If you have any idea !
Thank you !