class USpringArmComponent;

private:

UPROPERTY(EditAnywhere,BluepringReadOnly,Category = Camera, meta = (AllowPrivateAcces = "true"))

USpringArmComponent* CameraBoom;

#include "GameFramework/SpringArmComponent.h"

CameraBoom = CreateDefaultSubobject<USprintArmComponent>("CameraBoom")

CameraBoom->SetupAttachment(RootComponent);

Class UCameraComponent;

UCameraComponent* Camera;

#include "Camera/CameraComponent.h"

Camera = CreateDefaultSubobject<UCameraComponent>("Camera")

Camera->SetupAttachment(CameraBoom);

CameraBoom->TargetArmLength = 500.f

CameraBoom->SetRelativeRotation(FRotator(0.f ,-30.f, 0.f))