Help,Launch Isn't working!

[Tony True]

Loader 1...
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32052 items loaded.
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[Loading Login]
Listening on port 8484.
[Login Initialized]
[Loading Channel]
Exception in thread "main" java.lang.RuntimeException: java.lang.NumberFormatExc
eption: For input string: "500 "
at handling.channel.ChannelServer.run_startup_configurations(ChannelServ
er.java:110)
at handling.channel.ChannelServer.startChannel_Main(ChannelServer.java:3
06)
at server.Start.run(Start.java:92)
at server.Start.main(Start.java:111)
Caused by: java.lang.NumberFormatException: For input string: "500
"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at handling.channel.ChannelServer.run_startup_configurations(ChannelServ
er.java:102)
... 3 more
When i press launch this happens.

I used this tutorial: https://www.youtube.com/watch?v=M-1WJz7W7qs

[MentaL]

[namazi]

Caused by: java.lang.NumberFormatException: For input string: "500
"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at handling.channel.ChannelServer.run_startup_configurations(ChannelServer.java:102)
... 3 more

Please check a setup of "net.sf.odinms.world.exp = 500".

  99:    public final void run_startup_configurations() {
 100:        setChannel(this.channel);
 101:        try {
 102:            this.expRate = Integer.parseInt(ServerProperties.getProperty("net.sf.odinms.world.exp"));