RPC custom function to add object to JSONB array?

create function upd_quests(address text, is_complete bool, progress int, quest_id int, noodz_name text) returns quests as $$
 update quests
 set character_quests = jsonb_set(character_quests, '{quests}', character_quests -> 'quests' || '{"address":"address","noodz_name":"noodz_name","is_complete":false, "progress": 50, "quest_id": 1}')
  where address = upd_quests.address
  returning *;
$$ language sql;

sendQuestToSupabase("0x9001", false, 0, 1, "Noodz#29")

{
  "quests": [
    {
      "address": "0x9001",
      "progress": 0,
      "quest_id": 0,
      "noodz_name": "Noodz#29",
      "is_complete": false
    },
       {
      "address": "0x9001",
      "progress": 0,
      "quest_id": 1,
      "noodz_name": "Noodz#29",
      "is_complete": false
    }, 
  ]
}