Can't seem to get GetRelativeRotation() to work in Unreal C++ - c++

Question

According to the unreal documentation, GetRelativeRotation is a member variable of USceneComponent. However, when I run my code, it tells me that it's not. I have tried switching my Camera to a UCameraComponent(as it was originally before I checked the documenation) and still no luck. Any ideas? heres the code for the .cpp file:
#include "FirstPersonCharacter.h"
AFirstPersonCharacter::AFirstPersonCharacter()
{
PrimaryActorTick.bCanEverTick = true;
AutoPossessPlayer = EAutoReceiveInput::Player0;
bUseControllerRotationYaw = false;
Cam = CreateDefaultSubobject<UCameraComponent>(TEXT("Camera"));
Cam->AttachTo(RootComponent);
Cam->SetRelativeLocation(FVector(0.f, 0.f, 40.f)); //places the camera 40cm above the centre of the body.
}
void AFirstPersonCharacter::BeginPlay()
{
Super::BeginPlay();
}
void AFirstPersonCharacter::Tick(float DeltaTime)
{
Super::Tick(DeltaTime);
}
void AFirstPersonCharacter::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
Super::SetupPlayerInputComponent(PlayerInputComponent);
InputComponent->BindAxis("HorizontalMovement", this, &AFirstPersonCharacter::HorizontalMove);
InputComponent->BindAxis("VerticalMovement", this, &AFirstPersonCharacter::VerticalMove);
InputComponent->BindAxis("VerticalLook", this, &AFirstPersonCharacter::VerticalRot);
InputComponent->BindAxis("HorizontalLook", this, &AFirstPersonCharacter::HorizontalRot);
}
void AFirstPersonCharacter::HorizontalMove(float value)
{
if (value) //make sure it doesn't constantly call on addmovementinput if theres no value to add to it
{
AddMovementInput(GetActorRightVector(), value);
}
}
void AFirstPersonCharacter::VerticalMove(float value)
{
if (value) //make sure it doesn't constantly call on addmovementinput if theres no value to add to it
{
AddMovementInput(GetActorForwardVector(), value);
}
}
void AFirstPersonCharacter::HorizontalRot(float value)
{
if (value)
{
AddActorLocalRotation(FRotator(0, value, 0));
}
}
void AFirstPersonCharacter::VerticalRot(float value)
{
if (value)
{
float temp = Cam->GetRelativeRotation().Pitch + value; //THIS IS WHERE THE ISSUE IS
if (temp < 65 && temp > -65)
{
Cam->AddLocalRotation(FRotator(value, 0, 0));
}
}
and the code for the header file:
// Fill out your copyright notice in the Description page of Project Settings.
#pragma once
#include "CoreMinimal.h"
#include "GameFramework/Character.h"
#include "Components/InputComponent.h"
#include "Components/SceneComponent.h"
#include "Camera/CameraComponent.h"
#include "FirstPersonCharacter.generated.h"
UCLASS()
class MOMENTUMPROJECTMAIN_API AFirstPersonCharacter : public ACharacter
{
GENERATED_BODY()
public:
// Sets default values for this character's properties
AFirstPersonCharacter();
protected:
// Called when the game starts or when spawned
virtual void BeginPlay() override;
public:
// Called every frame
virtual void Tick(float DeltaTime) override;
// Called to bind functionality to input
virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
private:
void HorizontalMove(float value);
void VerticalMove(float value);
void HorizontalRot(float value);
void VerticalRot(float value);
//allows me to edit in the editor, without going into source code.
UPROPERTY(EditAnywhere, Category = "Camera")
UCameraComponent* Cam;
};
thanks.