title: Newbie "Cast To" Object in UE4
body: <p>I have blueprint for spawning zombies with a parameter 'NumOfZombies".
  In Zombie's blueprint when health = 0 I want to -1 to NumOfZombies.</p>
  
  <p>I use Cast To BP_SpawnPoint to get to NumOfZombies parameter but I don't know what to set to object.</p>
  
  <p>When I cast to my character I attach "get player character" but reffering to other blueprints seems to me a bit confusing.</p>