Mob arena plugin help

Hey guys, I've been having a bit of trouble setting up the config file for mob arena. I want to be able to add the upgrade wave which gives the user health potions on wave 10. When i add the upgrade wave, it does nothing.

This is my current config, I've checked it on YMALparser and everything is fine:
# MobArena v0.97.1 - Config-file
# Read the Wiki for details on how to set up this file: http://goo.gl/F5TTc
# Note: You -must- use spaces instead of tabs!
global-settings:
enabled: true
allowed-commands: /list, /pl
update-notification: true
classes:
Knight:
items: diamond_sword, potion:8229:6
armor: 306,307,308,309
Tank:
items: iron_sword, potion:8229:6
armor: 310,311,312,313
Archer:
items: 268:1 20:2, 261:1 49:3, arrow:128, 373:8229:6, 373:8257:3
helmet: 298:1 0:3
chestplate: 299 0:3
leggings: 300 0:2
boots: 301 0:1
Chemist:
items: stone_sword, potion:16428:30, potion:16388:8, potion:16389:20, potion:8197:3, potion:8226:1
armor: 314,315,316,317
Oddjob:
items: stone_sword, flint_and_steel, netherrack:2, tnt:4, potion:8197:3
armor: 298,299,300,301
arenas:
Arena1:
settings:
world: world
enabled: true
protect: true
entry-fee: ''
clear-wave-before-next: false
clear-boss-before-next: true
clear-wave-before-boss: true
soft-restore: false
soft-restore-drops: false
require-empty-inv-join: false
require-empty-inv-spec: false
hellhounds: false
pvp-enabled: false
monster-infight: false
allow-teleporting: false
spectate-on-death: true
auto-respawn: true
share-items-in-arena: true
min-players: 0
max-players: 0
max-join-distance: 0
first-wave-delay: 5
wave-interval: 15
final-wave: 0
monster-limit: 100
monster-exp: false
keep-exp: true
food-regen: false
lock-food-level: true
player-time-in-arena: world
auto-ignite-tnt: false
auto-start-timer: 0
start-delay-timer: 0
auto-ready: false
use-class-chests: false
display-waves-as-level: false
display-timer-as-level: false
use-scoreboards: true
isolated-chat: false
global-join-announce: false
global-end-announce: false
show-death-messages: true
waves:
recurrent:
def1:
type: default
priority: 1
frequency: 1
monsters:
zombies: 7
skeletons: 7
spiders: 7
creepers: 7
spec1:
type: special
priority: 2
frequency: 4
monsters:
powered-creepers: 10
zombie-pigmen: 10
blazes: 10
single:
swarm1:
type: swarm
wave: 6
monster: slime
amount: low
boss1:
type: boss
wave: 10
monster: cave_spider
health: verylow
abilities: arrows, throw-nearby
the_incredible_pigbeast:
type: boss
wave: 13
monster: zombie_pigman
health: medium
abilities: arrows, fireballs, throw-nearby
ability-interval: 4
ability-announce: true
irritating_zombie:
type: boss
wave: 18
monster: zombie
health: medium
abilities: warp-to-player, disorient-target, shuffle-positions
ability-interval: 3
ability-announce: true
upgrade1:
type: upgrade
priority: 7
frequency: 10
wave: 10
upgrades:
all: potion:8229:6
Archer: arrow:128
give-all-items: true
rewards:
waves:
every:
'1': $100
'3': iron_ingot:5, gold_ingot:3
'5': iron_ingot:10, gold_ingot:5
'10': diamond:1
after:
'10': diamond:2, $500
'13': diamond:5
'17': diamond_sword
'20': diamond:5, $1500
coords:
spawnpoints:
1407,75,244: 1407.5,75,244.5,0.0,0.0,world
1393,74,230: 1393.5,74,230.5,0.0,0.0,world
1404,74,217: 1404.5,74,217.5,0.0,0.0,world
1411,74,217: 1411.5,74,217.5,0.0,0.0,world
1422,74,231: 1422.5,74,231.5,0.0,0.0,world
1421,74,244: 1421.5,74,244.5,0.0,0.0,world
1422,74,258: 1422.5,74,258.5,0.0,0.0,world
1416,74,266: 1416.5,74,266.5,0.0,0.0,world
1408,74,274: 1408.5,74,274.5,0.0,0.0,world
1403,74,272: 1403.5,74,272.5,0.0,0.0,world
1394,74,262: 1394.5,74,262.5,0.0,0.0,world
1394,74,246: 1394.5,74,246.5,0.0,0.0,world
containers:
1407,74,229: 1407,74,229,0.0,0.0,world
1407,74,260: 1407,74,260,0.0,0.0,world
l1: 1377,64,200,0.0,0.0,world
l2: 1386,73,209,0.0,0.0,world
p1: 1372,69,191,0.0,0.0,world
p2: 1450,85,293,0.0,0.0,world
lobby: 1381.5,65,205.5,89.86,0.0,world
exit: 139.5,69,282.5,3.01,0.0,world
spectator: 1384.5,78,260.5,34.96,0.0,world
arena: 1407.5,75,244.5,356.71,0.0,world
class-limits:
Archer: -1
Oddjob: -1
Chemist: -1
Tank: -1
Knight: -1


This is just the upgrade part:
upgrade1:
type: upgrade
priority: 7
frequency: 10
wave: 10
upgrades:
all: potion:8229:6
Archer: arrow:128
give-all-items: true

Any help is appreciated, thanks.