Advancement for renaming an entity to grumm/dinnerbone

so I want to create an advancement for renaming an entity into grumm or dinnerbone and I cant figure out how to do so. Ive tried this: { "parent": "skyquest:story/what_is_broken_can_be_reforged", "display": { "icon": { "id": "minecraft:name_tag", "count": 1 }, "title": "Huh?!", "description": "???", "frame": "goal", "show_toast": true, "announce_to_chat": true }, "criteria": { "rename_entity_to_grumm": { "trigger": "minecraft:player_interacted_with_entity", "conditions": { "entity": { "nbt": "{CustomName:\"Grumm\"}" } } } }, "rewards": { "function": "skyquest:give/loot/advancement/story/huh" } } and I tried changing the format of nbt into many ways. for example: - {CustomName:Grumm} - {CustomName:"{\"text\":\"Grumm\"}"} - {CustomName:'{"text":"Grumm"}'} - {CustomName:'Grumm'} none of that worked. I also tried to replace 1 slash with 3 slashes (which I put in the commands above but discord only shows one of 3)