Ok i'm trying to get people to Levelup but its not working, here is the part where it calls the Level up proc:

mob/proc

npcdeathcheck(mob/P as mob,mob/M as mob)
if (M.HP <= 0)
P << "\red Victory"
P.Exp += M.expadd
P<<"\red You gain [M.expadd] exp and [M.coinadd] money,"
P.Coins += M.coinadd
endbattle(P)
Levelup(P)
del (M)
else

npcattack1(P, M)
yet, the proc does not work.
mob
proc
Levelup()
if(src.Exp >= src.MaxExp)
src<<"you could have leveled up but i havent done it yet ;)"

Now, when im in the game i kill a monster and you gain EXP etc but the proc does not get called, anyone know why??