a question and a request

Is it possible to change the number or types of monsters in a dungeon?

If so can someone make a hack for the US Grand chase that adds more of the chests from the relay dungeons to them or other dungeons?

It Can Be Possible Changing The Number Of The Monsters
[like The Early Boss : They added 1 More Boss To The Start]

Yah.1 Boss In The Start Of The Game.If In Xenia Border In 1st Renasien Appears.In 2nd Octus Appears.While In The Temple Of Cuatal 1st Is Vannesa.2nd Is Zen

so can it be done with the chests? they seem to act like monsters. You have to hit them, they drop items, they flash before dissapearing, and you cant go to the next room without hitting them first.

Try To Observe [They Took Damage From Your Attack (The Edited File You Used)]

I have extracted the fan_map.kom file and located the right stg file, but i do not know where to go from there.