UI Button is not working...

I am creating a user widget which generates random number and I followed this video from YouTube:

but the problem is that my button is not responding when I am trying to click it do not generates a random
number but when I call function OnClick with the blueprint it works so How to get it working with the c++
this is my CustomWidget.h file:

#pragma once

#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include <Runtime/UMG/Public/Components/TextBlock.h>
#include <Runtime/UMG/Public/Components/Button.h>
#include "CustomWidget.generated.h"

class CHAPTER5_API UCustomWidget : public UUserWidget
	void GenerateRandom();

	UPROPERTY(meta = (BindWidget))
	UTextBlock* RandomNumberLabel;

	UPROPERTY(meta = (BindWidget))
	UButton* GenerateButton;

	void NativeConstruct() override;

here is the cpp file:

#include "CustomWidget.h"

void UCustomWidget::NativeConstruct()


	GenerateButton->OnClicked.AddUniqueDynamic(this, &UCustomWidget::GenerateRandom);

void UCustomWidget::GenerateRandom()
	int32 RandomNumber = FMath::FRandRange(0, 100);



then i blueprinted this class, and created UI components likw button, textbox etc…
then in the level blueprint I created widget instance as shown in the tutorial but the button still didn’t worked.

Hello! Just have checked it - everything is working fine…

Did you set Parent Class?

If not, then, Open Class Settings in your Widget Blueprint, here set Parent class to your c++ customwidget class