Adding falling damage reduction as a mod?

[Murielkai]

I have been experimenting with adding a falling damage reduction mod to a jetpack. I see that there is a "Freefall Legs" armor item in the game and tried adding its enchantment which is supposed to reduce falling damage by 50% or so... but it doesn't really seem to work. There is a "no falling damage" enchantment that works just fine but I would rather have some scaling. Any ideas?