TimerHandle

void ATimerActor::BeginPlay()
{
    Super::BeginPlay();

    //Timer handler
    FTimerHandle TimerHandle;

    //Activate the Timer
    //1st Parameter: TimerHandle
    //2nd Parameter: The Object related to this timer
    //3rd Parameter: The function that is going to be fired
    //4th Parameter: The loop time
    //5th Parameter: True - if you want this timer to loop, false otherwise
    GetWorld()->GetTimerManager().SetTimer(TimerHandle, this, &ATimerActor::DoAPeriodicCheck, LoopTime, true);
}