To do this, you need to grab the player actor inside EnemyBehavior:
Sup.getActor('Player Actor')then grab the PlayerBehavior attached to that actor:
Sup.getActor('Player Actor').getBehavior(PlayerBehavior)then call the LowerHealth method:
Sup.getActor('Player Actor').getBehavior(PlayerBehavior).LowerHealth();[ note: I just broke down each part of the code, normally you would just type the one line:
Sup.getActor('Player Actor').getBehavior(PlayerBehavior).LowerHealth();in order to get the desired method ]