Levelable Weapon system

Anyone familiar with that can help me? '-'
I tried to use this system on my server, compiled without errors, just some warnings.

Code:

weaponlevel.cpp(76) : warning C4018: '<' : signed/unsigned mismatch
weaponlevel.cpp(113) : warning C4018: '<' : signed/unsigned mismatch

Code:

ItemUpgrade.cpp(1297) : warning C4244: 'argument' : conversion from 'DWORD' to 'BYTE', possible loss of data
ItemUpgrade.cpp(1298) : warning C4244: 'argument' : conversion from 'DWORD' to 'BYTE', possible loss of data
ItemUpgrade.cpp(1303) : warning C4244: 'argument' : conversion from 'DWORD' to 'BYTE', possible loss of data

After open wordserver, I got some logs:

Spoiler

That's my weaponlevel.inc

Spoiler

But my problem is... Nothing happens with the weapon, I tried to use a wand and nothing happens, It just looks like a normal weapon (Without the exp bar).
I forgot anything? :<
If someone can help me, I'll be really grateful :o