if (!(activeChar instanceof L2PcInstance))
return;
L2WorldRegion region = activeChar.getWorldRegion();
L2DynamicZone zone = new L2DynamicZone(region, activeChar, skill);
zone.setZone(new ZoneCylinder(activeChar.getX(),activeChar.getY(), activeChar.getZ()-200,
activeChar.getZ()+200, skill.getSkillRadius()));
region.addZone(zone);
for(L2Character c : activeChar.getKnownList().getKnownCharacters())
zone.revalidateInZone(c);