Advancements not showing up in chat

o/
i am using this datapack: https://www.curseforge.com/minecraft/customization/all-mob-heads
i realized that advancements dont show up in chat.
i went into the code, and using notepad++ replaced all the "false"s with "true"s - the only falses were the parts that said         "announce_to_chat": false,
which they now say the same thing except true.
it still doesn't announce it in chat? would be helpful if anyone can look into the datapacks code (1.20.6 on the curseforge link) - i didnt make it but im just editing it slightly :P
here's an example of a json of one of the advancements (after i made it say true)
{
    "display": {
        "icon": {
            "item": "minecraft:player_head",
            "nbt": "{SkullOwner:{Id:[I;352237603,-1093908583,-1451367127,286134688],Properties:{textures:[{Value:'eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZTQwMDIyM2YxZmE1NDc0MWQ0MjFkN2U4MDQ2NDA5ZDVmM2UxNWM3ZjQzNjRiMWI3Mzk5NDAyMDhmM2I2ODZkNCJ9fX0='}]}}}"
        },
        "title": "Angry Bee",
        "description": "1% + 2% per looting.",
        "frame": "task",
        "announce_to_chat": true,
        "show_toast": true
    },
    "parent": "all_mob_heads:collection/bee/pollinated_bee",
    "criteria": {
        "angry_bee": {
            "trigger": "minecraft:inventory_changed",
            "conditions": {
                "items": [
                    {
                        "item": "minecraft:player_head",
                        "nbt": "{SkullOwner:{Id:[I;352237603,-1093908583,-1451367127,286134688],Properties:{textures:[{Value:'eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZTQwMDIyM2YxZmE1NDc0MWQ0MjFkN2U4MDQ2NDA5ZDVmM2UxNWM3ZjQzNjRiMWI3Mzk5NDAyMDhmM2I2ODZkNCJ9fX0='}]}}}"
                    }
                ]
            }
        }
    }
}