I want to save this to fit my piano keys, what should I do

enter image description here

The media currently stored in Roblox is made up of this

{
    "VOLUME_SETTINGS": {
        "MIN_VOLUME": 10,
        "MAX_VOLUME": 200,
        "INITIAL_VOLUME": 100,
        "VOLUME_STEP": 10,
        "ADJUSTMENT_INTERVAL_MS": 50
    },
    "DRUM_FILTER_SETTINGS": {
        "ENABLED": true
    },
    "SUSTAIN_SETTINGS": {
        "SUSTAIN_CUTOFF": 64
    },
    "LEGIT_MODE_SETTINGS": {
        "ENABLED": false,
        "TIMING_VARIATION": 0.1,
        "NOTE_SKIP_CHANCE": 0.02,
        "EXTRA_DELAY_CHANCE": 0.02,
        "EXTRA_DELAY_MIN": 0.01,
        "EXTRA_DELAY_MAX": 0.2
      },
    "KEY_MAPPINGS": {
        "LIMITED": {
            "C2": "1", "C#2": "!", "D2": "2", "D#2": "@", "E2": "3", "F2": "4",
            "F#2": "$", "G2": "5", "G#2": "%", "A2": "6", "A#2": "^", "B2": "7",
            "C3": "8", "C#3": "*", "D3": "9", "D#3": "(", "E3": "0", "F3": "q",
            "F#3": "Q", "G3": "w", "G#3": "W", "A3": "e", "A#3": "E", "B3": "r",
            "C4": "t", "C#4": "T", "D4": "y", "D#4": "Y", "E4": "u", "F4": "i",
            "F#4": "I", "G4": "o", "G#4": "O", "A4": "p", "A#4": "P", "B4": "a",
            "C5": "s", "C#5": "S", "D5": "d", "D#5": "D", "E5": "f", "F5": "g",
            "F#5": "G", "G5": "h", "G#5": "H", "A5": "j", "A#5": "J", "B5": "k",
            "C6": "l", "C#6": "L", "D6": "z", "D#6": "Z", "E6": "x", "F6": "c",
            "F#6": "C", "G6": "v", "G#6": "V", "A6": "b", "A#6": "B", "B6": "n",
            "C7": "m"        },


        "FULL": {
            "A0": "ctrl+1", "A#0": "ctrl+2", "B0": "ctrl+3", "C1": "ctrl+4", "C#1": "ctrl+5",
            "D1": "ctrl+6", "D#1": "ctrl+7", "E1": "ctrl+8", "F1": "ctrl+9", "F#1": "ctrl+0",
            "G1": "ctrl+q", "G#1": "ctrl+w", "A1": "ctrl+e", "A#1": "ctrl+r", "B1": "ctrl+t",
            "C2": "1", "C#2": "!", "D2": "2", "D#2": "@", "E2": "3", "F2": "4",
            "F#2": "$", "G2": "5", "G#2": "%", "A2": "6", "A#2": "^", "B2": "7",
            "C3": "8", "C#3": "*", "D3": "9", "D#3": "(", "E3": "0", "F3": "q",
            "F#3": "Q", "G3": "w", "G#3": "W", "A3": "e", "A#3": "E", "B3": "r",
            "C4": "t", "C#4": "T", "D4": "y", "D#4": "Y", "E4": "u", "F4": "i",
            "F#4": "I", "G4": "o", "G#4": "O", "A4": "p", "A#4": "P", "B4": "a",
            "C5": "s", "C#5": "S", "D5": "d", "D#5": "D", "E5": "f", "F5": "g",
            "F#5": "G", "G5": "h", "G#5": "H", "A5": "j", "A#5": "J", "B5": "k",
            "C6": "l", "C#6": "L", "D6": "z", "D#6": "Z", "E6": "x", "F6": "c",
            "F#6": "C", "G6": "v", "G#6": "V", "A6": "b", "A#6": "B", "B6": "n",
            "C7": "m", "C#7": "ctrl+y", "D7": "ctrl+u", "D#7": "ctrl+i", "E7": "ctrl+o",
            "F7": "ctrl+p", "F#7": "ctrl+a", "G7": "ctrl+s", "G#7": "ctrl+d", "A7": "ctrl+f",
            "A#7": "ctrl+g", "B7": "ctrl+h", "C8": "ctrl+j"
        }
    },
    "HOTKEY_SETTINGS": {
        "SUSTAIN_KEY": "SPACE",
        "VOLUME_UP_KEY": "RIGHT",
        "VOLUME_DOWN_KEY": "LEFT"
    },
    "CONTROLS": {
        "PLAY_PAUSE": "DELETE",
        "REWIND": "HOME",
        "SKIP": "END",
        "SPEED_UP": "PAGEUP",
        "SLOW_DOWN": "PAGEDOWN",
        "LOAD_NEW_SONG": "F5",
        "TOGGLE_88_KEY_MODE": "F6",
        "TOGGLE_VOLUME_ADJUSTMENT": "F7",
        "TOGGLE_TRANSPOSE_ADJUSTMENT": "F8",
        "RESTART_SONG": "F1",
        "STOP_AND_EXIT": "ESCAPE",
        "TOGGLE_SUSTAIN_MODE": "F10"
    }
    
}

I want to save this in this key, but it doesn’t work no matter how hard I try.

Please put the sauce just right for me. I’m in a hurry..