Survival Games Help!

Im having trouble with the survival games plugin called ultimate survival games, the problem is that i try to add new stuff into the game but the file resorts back to its default stage please help me, here is what i put in

# ##### UltimateSurvivalGames Chestloot Configuration #####
#
# ## How does this work? ##
# The chestloot is splitted into 5 lists. You can add unlimited items to each list.
# In one chest can spawn up to 8 itemstacks. For each itemstack, the plugin choose
# one list. The following lists under this text have different spawn changes:
#
# Level 1: 40 %
# Level 2: 30 %
# Level 3: 15 %
# Level 4: 10 %
# Level 5: 5 %
#
# If the plugin has choosed a list for an itemstack, it takes a item random from the list.
#
# ## How can I modify the items? ##
# You can add or remove items from all lists. But at least one item has to be on each list.
#
# ## How do I format the items? ##
# MATERIAL/ITEMID[] [AMOUNT] [SPECIAL THINGS]
# Here are some examples:
#
# # Normal Item:
# "BREAD" - is the same like "BREAD 1", "BREAD:0 1" or "297:0 1"
#
# # If you want to set a predefined durability-level, just change the subid:
# "STONE_SWORD:10" - This tool has already 10 uses lost.
#
# # You can also add enchantments to an item:
# "STONE_SWORD enchant:KNOCKBACK,2 enchant:DAMAGE_ALL,3" - This item has knockback 2 and sharpness 3! Note: Only the vanilla level of an enchantment can be used!
#
# # You can also set a custom name and lore for an item:
# "EGG name:&eEaster_Egg lore:&7Throw//&7me!" - This is an egg with a displayname "Easter Egg" and the lore "Throw me"! Note: Spaces are "_" and line breaks in lore the charakters "//"

Chestloot:
Level 1:
- WOOD_AXE
- LEATHER_BOOTS
- GOLD_HELMET
- APPLE 3
- ARROW 5
- SNOWBALL name: &bYarn 4
- Egg name: &eBreakfast 3
- SPAWN_PIG 2
- WHEAT 6
- FEATHER 3
- FLINT 3
- BOTTLE_O'_ENCHANTING 2
Level 2:

- POTION effect:speed,10,1 name:&3Speed
- GOLD_AXE 1
- FISHING_ROD
- SPAWN_COW
- SADDLE
- SPAWN_
- COOKED_BEEF
- RAW_CHICKEN 2
- COOKED_CHICKEN
- MUSHROOM_SOUP
- WOOD_SWORD
- GOLD_HELMET
- GOLD_LEGGINGS
- LEATHER_BOOTS
- GRILLED_PORK 2
- BOWL
- MELON 2
- RAW_CHICKEN
Level 3:
- MELON_BLOCK
- SPAWN_SHEEP name: &fSpawn_KnockdownChris
- STONE_AXE
- SPAWN_ZOMBIE
- GOLD_HORSE_ARMOR
- CARROT_ON_A_STICK
- LEAD
- IRON_HELMET
- MELON 4
- GOLD_SWORD
- WEB 3
- CHAINMAIL_CHESTPLATE
- CHAINMAIL_BOOTS
- FISHING_ROD
- LEATHER_LEGGINGS
- ARROW 4
- GOLD_INGOT 2
- TNT name:&eInstant_ignition_bomb
- DEAD_BUSH
Level 4:
- GOLD_INGOT 5
- IRON_HELMET
- IRON LEGGINGS
- IRON_AXE
- IRON_SWORD
- GOLDEN_APPLE
- SPAWN_SKELETON
- IRON_HORSE_ARMOR
- SHEARS name:&4Shears_of_Satan enchant:KNOCKBACK,2
- SPAWN_HORSE
- IRON_CHESTPLATE
- IRON_BOOTS
- CHAINMAIL_HELMET
- FLINT_AND_STEEL
- GOLD_BOOTS
- STONE_SWORD
- WOOD_SWORD
- STRING 2
- STONE_SWORD name:&eSword_of_Herobrine enchant:KNOCKBACK,1 enchant:DAMAGE_ALL,1
Level 5:
- DIAMOND_HELMET
- DIAMOND_CHESTPLATE
- DIAMOND_LEGGINGS
- DIAMOND_BOOTS
- DIAMOND_HOE name:&Hoe_of_Hope enchant:DAMAGE_ALL,4
- DIAMOND_AXE
- DIAMOND_SWORD
- DIAMOND_HORSE_ARMOR
- GOLD_SWORD name:&cHOT_STUFF enchant: FIRE_ASPECT,2
- SPAWN_WITCH
- SPAWN_BLAZE
- SPAWN_MAGMA_CUBE
- SPLASH_POTION effect:POISON,10,1 name:&2Fart_In_a_Jar
- DIAMOND 2
- IRON_INGOT
- STICK 2
- CAKE
- FERMENTED_SPIDER_EYE
- BOW:168
- POTION effect:regeneration,10,1 name:&cRegeneration
- POTION effect:jump,18,1 effect:speed,18,2 name:&ePotion_of_a_rabbit lore:&7Give_you_the//&7abilities_of_a_rabbit!
Chest-Title: Survival Chest