GameplayAbility activation by event in C++ does not work!

Development Programming & Scripting
1

I am trying to set up the ability class that will activate the ability when a specific GameplayEffect is triggered. I add the AbilityTrigger OnGiveAbility.

void UBaseGameplayAbility::OnGiveAbility(const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilitySpec& Spec)
{
    // Always call the Super implementation
    Super::OnGiveAbility(ActorInfo, Spec);
    
    // Add the trigger to the ability instance
    FAbilityTriggerData TriggerData;
    TriggerData.TriggerTag = GameplayTags::Ability_Activation_AutoFire;
    TriggerData.TriggerSource = EGameplayAbilityTriggerSource::GameplayEvent;
    
    AbilityTriggers.Add(TriggerData);
    // Check if the trigger already exists to prevent duplication (Good practice)
    bool bTriggerExists = false;
    
    // --- CRITICAL LOGGING STEP ---
    // Log to confirm the trigger was successfully added to the spec's list.
    for (const FAbilityTriggerData& Trigger : AbilityTriggers)
    {
        if (Trigger.TriggerTag == GameplayTags::Ability_Activation_AutoFire)
        {
            UE_LOG(LogTemp, Warning,
                TEXT("Ability %s successfully registered Trigger: %s (Source: %s)"),
                *GetName(),
                *Trigger.TriggerTag.ToString(),
                *UEnum::GetValueAsString(Trigger.TriggerSource)
            );
            return; // Once confirmed, exit
        }
    }
}

So I check that ability triggers are granted in my logs, all good here.

Inside my Character class, I tried different ways to trigger abilities with events, but no trigger actually goes to ActivateAbility.

FGameplayEventData Payload;
AbilitySystemComponent->HandleGameplayEvent(GameplayTags::Ability_Activation_AutoFire, &Payload);

// OR

UAbilitySystemBlueprintLibrary::SendGameplayEventToActor(this, GameplayTags::Ability_Activation_AutoFire, Payload);

I also tried to apply tags to the Character, but nothing triggers the ability Activation. I am totally lost on it at the moment.

I am able to trigger the abilities from the same place by activation call, but not with events. And there are no good tools to check out how the event is triggered and processed.

If anyone has an idea about what I may be missing, I would appreciate it, as I have been stuck on this for a few days now.

2

Ok, I was able to debug the issue.

So the fix was to move my trigger adition code:

FAbilityTriggerData TriggerData;
TriggerData.TriggerTag = GameplayTags::Ability_Activation_AutoFire;
TriggerData.TriggerSource = EGameplayAbilityTriggerSource::GameplayEvent;

into the constructor of the ability, asAbilityTriggers are only read once by the AbilitySystemComponent, and it is before the OnGiveAbility, where I was adding it previously.