ON INIT {
 SETNAME [description_potion2berust]
 SET_MATERIAL GLASS
 SET_GROUP PROVISIONS
 SET_PRICE 20
 PLAYERSTACKSIZE 10
 SET_STEAL 50
 SET_WEIGHT 0
  TWEAK SKIN "ITEM_POTION_2BEWHITE" "ITEM_POTION_2BERUST"
 ACCEPT
}

ON INVENTORYUSE {
 INVENTORY PLAYERADD "\\magic\\powder_rust\\powder_rust"
 REPLACEME "\\provisions\\bottle_empty\\bottle_empty"
 ACCEPT
}

ON COMBINE {
 IF (^$param1 ISCLASS "powder_fern") {
    IF (^PLAYER_SKILL_OBJECT_KNOWLEDGE < 30) {
      SPEAK -p [player_not_skilled_enough] NOP
      HEROSAY [required_obj_30]
      ACCEPT
    }
  DESTROY ^$PARAM1
  REPLACEME "\\magic\\potion2bePoison\\potion2bePoison"
 ACCEPT
 }
ACCEPT
} 

ON CUSTOM {
 IF (^$PARAM1 == "MAKE_POTION")
      SPEAK -p [player_no] NOP
ACCEPT
} 