在GE执行到最后阶段的，执行的数据查询-PostGameplayEffectExecute

virtual void PostGameplayEffectExecute(const struct FGameplayEffectModCallbackData& Data) override;

example 1：

Data.EvaluatedData.magnitude//记录GE过程值的差值

example 2：

void UAuraAttributeSet::PostGameplayEffectExecute(const struct FGameplayEffectModCallbackData& Data)
{
    Super::PostGameplayEffectExecute(Data);
    
    FEffectProperties Props;
    SetEffectProperties(Data, Props);
    
}

void UAuraAttributeSet::SetEffectProperties(const FGameplayEffectModCallbackData& Data, FEffectProperties& Props) const
{
    Props.EffectContextHandle = Data.EffectSpec.GetContext();
    Props.SourceASC = Props.EffectContextHandle.GetOriginalInstigatorAbilitySystemComponent();

    if (IsValid(Props.SourceASC) && Props.SourceASC->AbilityActorInfo.IsValid() && Props.SourceASC->AbilityActorInfo->AvatarActor.IsValid())
    {
        Props.SourceAvatarActor = Props.SourceASC->AbilityActorInfo->AvatarActor.Get();
        Props.SourceController = Props.SourceASC->AbilityActorInfo->PlayerController.Get();
        if (Props.SourceController == nullptr && Props.SourceAvatarActor != nullptr)
        {
            if (const APawn* Pawn = Cast<APawn>(Props.SourceAvatarActor))
            {
                Props.SourceController = Pawn->GetController();
            }
        }
        if (Props.SourceController != nullptr)
        {
            ACharacter* SourceCharacter = Cast<ACharacter>(Props.SourceController->GetPawn());
        }
    }

    if (Data.Target.AbilityActorInfo.IsValid() && Data.Target.AbilityActorInfo->AvatarActor.IsValid())
    {
        Props.TargetAvatarActor = Data.Target.AbilityActorInfo->AvatarActor.Get();
        Props.TargetController = Data.Target.AbilityActorInfo->PlayerController.Get();
        Props.TargetCharacter = Cast<ACharacter>(Props.TargetAvatarActor);
        Props.TargetASC = UAbilitySystemBlueprintLibrary::GetAbilitySystemComponent(Props.TargetAvatarActor);
    }
}

USTRUCT(BlueprintType)
struct FEffectProperties
{
    GENERATED_BODY()

    FEffectProperties() {}

    FGameplayEffectContextHandle EffectContextHandle;

    UPROPERTY()
    UAbilitySystemComponent* SourceASC = nullptr;

    UPROPERTY()
    AActor* SourceAvatarActor = nullptr;

    UPROPERTY()
    AController* SourceController = nullptr;

    UPROPERTY()
    ACharacter* SourceCharacter = nullptr;

    UPROPERTY()
    UAbilitySystemComponent* TargetASC = nullptr;

    UPROPERTY()
    AActor* TargetAvatarActor = nullptr;

    UPROPERTY()
    AController* TargetController = nullptr;

    UPROPERTY()
    ACharacter* TargetCharacter = nullptr;
};