I made a new monster but duplicated and replaced its name to these script:
mob_db2.txt
3006,FallenMinion,Heroin's Minion,Heroin's Minion,200,800000,0,295550,118895,2,3000,3000,1,25,180,150,100,100,100,100,10,12,2,2,67,0x37B5,150,576,600,240,0,0,0,0,0,0,0,20103,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
mob_avail.txt
// CUSTOM MOBS
3006,1716,0
mob_item_ratio.txt
20103,30,3006
drops.conf
item_rate_common: 10000
item_rate_common_boss: 10000
item_drop_common_min: 10000
item_drop_common_max: 10000
// The rate healing items are dropped (items that restore HP or SP)
item_rate_heal: 10000
item_rate_heal_boss: 10000
item_drop_heal_min: 10000
item_drop_heal_max: 10000
// The rate at which usable items (in the item tab) other then healing items are dropped.
item_rate_use: 10000
item_rate_use_boss: 10000
item_drop_use_min: 10000
item_drop_use_max: 10000
// The rate at which equipment is dropped.
item_rate_equip: 3000
item_rate_equip_boss: 3000
item_drop_equip_min: 3000
item_drop_equip_max: 3000
// The rate at which cards are dropped
item_rate_card: 300000
item_rate_card_boss: 100
item_drop_card_min: 1
item_drop_card_max: 10000
// The rate adjustment for the MVP items that the MVP gets directly in their inventory
item_rate_mvp: 1000000
item_drop_mvp_min: 10000
item_drop_mvp_max: 10000
// The rate adjustment for card-granted item drops.
item_rate_adddrop: 10000
item_drop_add_min: 10000
item_drop_add_max: 10000
// Rate adjustment for Treasure Box drops (these override all other modifiers)
item_rate_treasure: 10000
item_drop_treasure_min: 10000
item_drop_treasure_max: 10000
but when i type @mi 3006, the item is still 100%, I want to make it only 30%