How do you modify armor values 1.20.1

[worldly cradle]

I tried multiple different terms but nothing seems to be working

I got this as the base item tier/tag

ItemEvents.armorTierRegistry(event => {
event.add('dragonite_tier', tier => {
tier.toughness = 6;
tier.knockbackResistance = 0.2;
});
});

But when I try adding
tier.armorProtection it just says it's an invalid term.

I also tried modifying induvidual armor pieces using,

.armor
But it says that's also not a valid term.
What should I be using?
Toughness and knockbac is working

[tall nebula]

Once your ticket has been resolved, please close it with </ticket close:1054771505520717835> command!

[hazy copper]

Are you on a phone?

[sturdy otter]

Let’s see if KJSO can find it
https://hunter19823.github.io/kubejsoffline/1.20.1/forge#MutableArmorTier

There seems to be a "Defense" method which is probably the real name of "protection":

https://hunter19823.github.io/kubejsoffline/1.20.1/forge/#MutableArmorTier?focus=dev.latvian.mods.kubejs.item.MutableArmorTier.getDefenseForType(net.minecraft.world.item.ArmorItem%24net.minecraft.world.item.Type+equipmentSlot)

Oh there is actually a slot protections method you could use:

https://hunter19823.github.io/kubejsoffline/1.20.1/forge/#MutableArmorTier?focus=dev.latvian.mods.kubejs.item.MutableArmorTier.setSlotProtections(.int+p)&methods-sort-by=parameters&methods-sort-direction=1&methods-expanded=true

[worldly cradle]

Yes using pojav

[worldly cradle]

That's probably not relevant tho because everything else works as intended

[ivory dune]

ItemEvents.armorTierRegistry(event => {
  event.add('copper', tier => {
    tier.durabilityMultiplier = 30 // Each slot will be multiplied with [13, 15, 16, 11]
    tier.slotProtections = [1, 3, 4, 1] // Slot indicies are [FEET, LEGS, BODY, HEAD]
    tier.enchantmentValue = 8
    tier.equipSound = 'minecraft:item.armor.equip_iron'
    tier.repairIngredient = '#forge:ingots/copper'
    tier.toughness = 0.0 // diamond has 2.0, netherite 3.0
    tier.knockbackResistance = 0.0
  })
})

Pretty sure thats an example from the wiki

[worldly cradle]

Thanks, I tried "tier.slotProtections ="
before, and it didn't work. But I got this to work so I probably had the wrong syntax somewhere although I've gone through so many different configurations I don't have the failed "tier.slotProtections =" version left.