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How can i create OnComponentBeginOverlap Event using c++

Hi, i am new to c++ in unreal engine and i was trying this example https://docs.unrealengine.com/latest/INT/Gameplay/ClassCreation/CodeOnly/index.html but it gives me compile errors on the AddDynamic.
my engine version is 4.9.2



#pragma once

#include "GameFramework/Actor.h"
#include "Overlap.generated.h"

UCLASS()
class BATTERYGAME_API AOverlap : public AActor
{
	GENERATED_BODY()
	
public:
	/** point light component */
	UPROPERTY(VisibleAnywhere, Category = "Switch Components")
	class UPointLightComponent* PointLight1;

	/** sphere component */
	UPROPERTY(VisibleAnywhere, Category = "Switch Components")
	class USphereComponent* Sphere1;

	AOverlap();

	/** called when something enters the sphere component */
	UFUNCTION()
		void OnOverlapBegin(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult);

	/** called when something leaves the sphere component */
	UFUNCTION()
		void OnOverlapEnd(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex);

	/** Toggles the light component's visibility*/
	UFUNCTION()
		void ToggleLight();

	/** the desired intensity for the light */
	UPROPERTY(VisibleAnywhere, Category = "Switch Variables")
		float DesiredIntensity;

};




#include "BatteryGame.h"
#include "Overlap.h"



AOverlap::AOverlap()
{
	DesiredIntensity = 3000.0f;

	PointLight1 = CreateDefaultSubobject<UPointLightComponent>(TEXT("PointLight1"));
	PointLight1->Intensity = DesiredIntensity;
	PointLight1->bVisible = true;
	RootComponent = PointLight1;

	Sphere1 = CreateDefaultSubobject<USphereComponent>(TEXT("Sphere1"));
	Sphere1->InitSphereRadius(250.0f);
	Sphere1->AttachParent = RootComponent;

	Sphere1->OnComponentBeginOverlap.AddDynamic(this, &AOverlap::OnOverlap);        // set up a notification for when this component overlaps something
	Sphere1->OnComponentEndOverlap.AddDynamic(this, &AOverlap::OnOverlap);      // set up a notification for when this component overlaps something

}

void AOverlap::OnOverlapBegin(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
	if (OtherActor && (OtherActor != this) && OtherComp)
	{
		ToggleLight();
	}
}

void AOverlap::OnOverlapEnd(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex)
{
	if (OtherActor && (OtherActor != this) && OtherComp)
	{
		ToggleLight();
	}
}

void AOverlap::ToggleLight()
{
	PointLight1->ToggleVisibility();
}


Replace with:

Thanks it works.