Hab nachgeschaut im SRD:
If you get more than one attack per round because your base attack bonus is high enough, because you fight with two weapons or a double weapon or for some special reason you must use a full-round action to get your additional attacks. You do not need to specify the targets of your attacks ahead of time. You can see how the earlier attacks turn out before assigning the later ones.
Beim nächsten Mal werd ich einfach eine Wenn-dann-Bedingung einbauen.
Damage Reduction sollte auch sichtbar sein, aber hier kann man streiten, was genau "ineffective" heißt.
Wounds heal immediately, or the weapon bounces off harmlessly (in either case, the opponent knows the attack was ineffective)