monster exp = 0

[engel86]

hey guys,

is there any chance to set the monster exp to 0?
When I set "(exp 0)" the monsters dont drop anything and if I just leave it clear "(exp )" they are not dropping too. Also if I delete "(exp XY)" the monsters are not dropping anything.
this is my testmonster:

;Demon Vulgar    
(monster (name 1) (index 1) (country 2) (race 0) (level 1) (ai 1) (range 20) (sight 160 240) (exp 0)  (itemgroup 1001 2) (itemgroup 3000 1) (itemgroup 3001 1) (itemgroup 3002 1)
        (str 21) (hth 1) (int 10) (wis 10) (dex 2) (hp 1) (mp 70) (aspeed 2400) (hit 0) (dodge 0) 
        (attack 0 7 7) (magic 0 0) (defense 0 0) (absorb 0) (mspeed 1600 800)
        (quest (1100 1 1100 1) (1150 1 1150 1)))

Thanks !