Add StaticMeshActor to Character won't show

Development Character & Animation
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1

hi,

I’m trying to add in C++ only (no blueprint) a weapon to my character.

Now I have this :

BaseWeapon.h

BaseWeapon.cpp

MyProject2Character.h

MyProject2Character.cpp

si, this is my BaseWeapon.h :

#pragma once

#include "Engine/StaticMeshActor.h"
#include "BaseWeapon.generated.h"

/**
 *
 */
UCLASS()
class MYPROJECT2_API ABaseWeapon : public AStaticMeshActor
{
	GENERATED_BODY()



public:

	ABaseWeapon();

	UStaticMeshComponent* mStaticMeshComponent;
	UStaticMesh* mStaticMesh;

        UFUNCTION(BlueprintNativeEvent, BlueprintCallable, Category = "init")
		void setObject(const FString & mesh_name);

        void init(const FString & mesh_name);

};

Then this is my BaseWeapon.cpp

#include "MyProject2.h"
#include "BaseWeapon.h"

ABaseWeapon::ABaseWeapon()
{

	UE_LOG(LogClass, Warning, TEXT(" CREATE BASE WEAPON "));

	mStaticMeshComponent = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("weapon"));
	static ConstructorHelpers::FObjectFinder<UStaticMesh> StaticMeshOb_AW2(TEXT("StaticMesh'/Game/SWORD.SWORD'"));
	mStaticMesh = StaticMeshOb_AW2.Object;

	RootComponent = mStaticMeshComponent;
	
};

void ABaseWeapon::init(const FString & mesh_name)
{
	setObject_Implementation(mesh_name);
}

void ABaseWeapon::setObject_Implementation(const FString & mesh_name)
{

	UE_LOG(LogClass, Warning, TEXT(" init ADDING... "));

	//static ConstructorHelpers::FObjectFinder<UStaticMesh> StaticMeshOb_AW2(TEXT(mesh_name)); // why Lmesh_name  doesn't exist ???

	mStaticMeshComponent->SetStaticMesh(mStaticMesh);
	mStaticMeshComponent->SetCollisionProfileName(TEXT("h_weapon"));
	mStaticMeshComponent->Mobility = EComponentMobility::Movable;

	mStaticMeshComponent->OnComponentBeginOverlap.AddDynamic(this, &ABaseWeapon::OnBeginOverlap);
	mStaticMeshComponent->bGenerateOverlapEvents = true;

	UE_LOG(LogClass, Warning, TEXT(" init ok... "));

}

So in my character, this is what I do :

	weapon = NewObject<ABaseWeapon>();
	weapon->init(TEXT(""));
  
   //RootComponent or not ?
	weapon->AttachToComponent(GetMesh(), FAttachmentTransformRules(EAttachmentRule::SnapToTarget, true), TEXT("Hand_RSocket"));
	// or maybe ->
	//weapon->mStaticMeshComponent->AttachToComponent(GetMesh(), FAttachmentTransformRules(EAttachmentRule::SnapToTarget, true), TEXT("Hand_RSocket"));

So here, everything compiles, but nothing is showed in my Character,

Any idea somebody ?

thanks