Working With Attributes in C++

UAttributeManagerComponent* Attr = FindComponentByClass<UAttributeManagerComponent>();

float Health = Attr->GetAttributeValue("Health");
float Stamina = Attr->GetAttributeValue(FName("Stamina"));

Attr->AddToAttribute("Health", 25.f);
Attr->SubtractFromAttribute("Stamina", 10.f);
Attr->SetAttributeValue("Defense", 50.f);

Attr->ApplyEffect(EffectDefinition, Instigator);

Attr->AddXP("Logging", 50.f);
int32 NewLevel = Attr->GetAttributeLevel("Logging");

Attr->OnAttributeChanged.AddDynamic(this, &ThisClass::HandleChange);

Attr->OnAttributeChangedNative.AddUObject(this, &ThisClass::HandleChange);

void AMyCharacter::ConsumeStamina(float Amount)
{
    if (auto* Attr = FindComponentByClass<UAttributeManagerComponent>())
    {
        Attr->SubtractFromAttribute("Stamina", Amount);

        if (Attr->GetAttributeValue("Stamina") <= 0)
        {
            // Character is exhausted
        }
    }
}