break event not workin on deepslate diamond ore

[Shandel1337]

Neoforge 1.21.1
{
"playerhelditem": "minecraft:iron_pickaxe",
"block": "minecraft:deepslate_diamond_ore",
"message": "You cannot mine this!",
"result": "deny"
}
Nothing. i try break by iron pickaxe and he breaking...

[McJty]

Can you show your entire json file?

[Shandel1337]

I double-checked again and for some reason it worked, probably because I changed the server core. before that, it was youer-1.21.1-b73aaa4, and now vanilla neoforgeI