Is it possible to mod growths without items?

Okay, so after some tedious eventing with a boons/banes system for the Avatar to modify their bases, I was wondering if it’s possible to modify growths without held items or weapons.

Let’s say… you can increase somebody’s growths through a global flag or something like that.
Is that possible?
Like if global flag A0 is on, it adds or subtracts 20% from a certain unit’s HP or Mag growth.
And they stack.

Just an interesting thought.

It’s definitely possible, yes. Legends of Avenir does it with its character creator, although that code is not free to use. What you describe with flags sounds like an easy way to do it for a single unit ID. I would deem this as 1/5 difficulty to write that asm with guidance in #gba_coding_help on discord. But you’ll find it easiest to install it as part of a custom build if you’re using febuilder.