on damage:
	if attacker is player:
		if victim is zombie:
			if name of victim is "&c&lMroczny &a&lZombie":
				loop all players in radius 20 around victim:
					display "&c&lMroczny &a&lZombie: &f%victim's health%&4/&f%max health of victim%" on bossbar with 100 percent by 5 seconds for loop-player
	if attacker is zombie:
		if name of attacker is "&c&lMroczny &a&lZombie":
			set damage to damage * 2