Bukkit

i put all mobs i wanted to keep in config and run command and they still disapier . had to turn off auto clear blocks because it made server laggyer , also had problems when someone dies right before clear items , they loose everything even if they get to there stuff in one min. so had to use plugin for gravestones. i love idea of this plugin , have a few ideas that might make it better , but not good at making plugins lol would love to learn , any help would be great thanks

#This is /lagg killmobs, put what you DON'T want removed!
# -- 'remove-named', when FALSE entities with custom names will NOT be removed
# -- 'mob-filter' lists which mobs will be IGNORED during /lagg killmobs
kill-mobs:
remove-named: false
mob-filter:
# - Villager
# - Wolf
# - Pig
# - Zombie hasName <- This entity will be filtered if it HAS a name
# - ARMOR_STAND
# - Horse
# - Allay
# - Frog
# - Tropical_Fish
# - Axolotl
# - Sheep
# - Cow
# - Camel
# - Chicken

hope this helps :)