DamageCause ???

Hello everybody,

i have a small question to the DamageCauses....
When i kill a mob with an void in my plugin (target.damage() ) i can't get the Cause....
Why? And how can i get the DamageCause?

 

Use the EntityDamageEvent and the getCause() function

 

It doens't work!
At the moment i have following:

Code:java

pTarget.damage(dmg);
        EntityDamageEvent evt= new EntityDamageEvent(pTarget, EntityDamageEvent.DamageCause.ENTITY_ATTACK,dmg);
        pTarget.setLastDamageCause(evt);

With this i made the damage at the Entity!

Then at a working listener:

Code:java

 Entity  deadE = event.getEntity();
                DamageCause cause = ((EntityDamageEvent) event.getEntity().getLastDamageCause()).getCause();

I got a NullPointerException at this line:
DamageCause cause = ((EntityDamageEvent) event.getEntity().getLastDamageCause()).getCause();
Why? I set the last DamageCause with the new Event or?