Trying to make custom music discs 24w21a

Hi I want to make a custom music disc and I am trying to use the new data/jukebox_song and I don't know why it still doesn't work 
Code:
`{
    "sound_event": "minecraft:music_disc.alexanderhamilton",
    "description": "test",
    "length_in_seconds": 32.0,
    "comparator_output": 2
}`