I don't know if it's a bug or if I did it wrong...

[Fakeziinho]

I was trying to make a script that changed the miningSpeed`of netherite pickaxe, it just didn't work, could someone help me what I did wrong.

onEvent('item.modification', e => {
	e.modify('minecraft:netherite_pickaxe', t => {
		t.tier = tierOptions => {
			tierOptions.speed = 16.0
		}
	})
})

[MaxNeedsSnacks]

Are you using Forge or Fabric? This might be an actual bug (I opened #194 to track it if it is)