[Script] Spawner Type recover with pickaxe

Before, download link is: http://www.mediafire.com/download/ngosmjszjqb8fw4/SpawnerTDGP.sk
Hello world ! (sry for my bad english)
I present today my seconds script: Spawner Type recover
First of all,this script requiere a plugin Spawner.jar:
http://dev.bukkit.org/bukkit-plugins/spawner/
This script was developped for 1.7.10 minecraft version

This script consiste to break a spawner with a golden pickaxe, after, the spawner is break and you are gived the type of spawner you broke before.

The pickaxe is avaible by a command /pspawner <player>
and usable with the console.
/pspawnergive <player> is a rescue command if problem occurs

Pickaxe: The Pickaxe has 3 of durability (for take 3 spawner and not illimity ^^)
You can edit this in config.
The pick has a name.
You can't break any other blocks with this pickaxe exept spawner.

Edit v1.1:
Anti-Bypass solution:
Pickaxe is not dropable
Pickaxe is not picking up.
You can't open an anvil if you have pickaxe in your inventory
(for not repair the pickaxe)

Screenshot:
http://prntscr.com/8vd6mh
http://prntscr.com/8vd6yh
http://prntscr.com/8vd7nm

HAVE NICE MONDAY