How to add a World Rotation to an Actor

Development Programming & Scripting
3

void APickup::Tick( float DeltaTime )
{
Super::Tick( DeltaTime );

	FRotator rotation = FRotator(0.f, 0.f, RotationSpeed);
	AddActorLocalRotation(rotation * DeltaTime);
}

This doesn’t work. (RotationSpeed is 4.f)