Bug #2

[19:38:52] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'mb' in plugin Minecraft_Brawl v0.0.7.0(dev)-b${BUILD_NUMBER}
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175) ~[craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:683) ~[craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand(PlayerConnection.java:952) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:814) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle(PacketPlayInChat.java:47) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:655) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
Caused by: java.lang.NumberFormatException: For input string: "$0"
	at java.lang.NumberFormatException.forInputString(Unknown Source) ~[?:1.8.0_05]
	at java.lang.Integer.parseInt(Unknown Source) ~[?:1.8.0_05]
	at java.lang.Integer.parseInt(Unknown Source) ~[?:1.8.0_05]
	at org.infernogames.mb.Managers.FileManager.getReward(FileManager.java:59) ~[?:?]
	at org.infernogames.mb.Managers.CreationManager.createArena(CreationManager.java:55) ~[?:?]
	at org.infernogames.mb.Commands.CommandCreation.onCommand(CommandCreation.java:133) ~[?:?]
	at org.infernogames.mb.Commands.MainCommand.onCommand(MainCommand.java:69) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit-1.7.2-R0.4-20140316.221310-4.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks]
	... 13 more