I am writing a function to modify the objects inside. 1 problem: One of the object properties is not the last element, seems like it needs to array?

const recordCollection = {
    2548: {
      albumTitle: 'Slippery When Wet',
      artist: 'Bon Jovi',
      tracks: ['Let It Rock', 'You Give Love a Bad Name']
    },
    2468: {
      albumTitle: '1999',
      artist: 'Prince',
      tracks: ['1999', 'Little Red Corvette']
    },
    1245: {
      artist: 'Robert Palmer',
      tracks: []
    },
    5439: {
      albumTitle: 'ABBA Gold'
    }
  };
  
  **// Only change code below this line**

  function updateRecords(records, id, prop, value) {
     **2548 Jon Bon Jovi** 
        if (value === "") { 
        delete records[id].artist;
        delete records[id].tracks;
    } 

      **//5439 ABBA**
    else if (prop === 'tracks') {
        recordCollection[id].tracks = [];
        records[id].tracks.push(value);

This is the error iMessage I am getting in regards to the ABBA song:
After updateRecords(recordCollection, 5439, “tracks”, “Take a Chance on Me”), tracks should have the string Take a Chance on Me as the last element.I Think they want me to Create an Array? But I thought the Abba song was the last element

       **// 5439 ABBA**
    } else if (prop === "artist") {
        records[id].artist = value;

      **// 1245 Robert Palmer**
    } else if (prop === "tracks") {
        records[id].tracks.push(value);
      
      **// 1245 Robert Palmer**
    } else if (prop != "tracks") {
        records[id].albumTitle = "Riptide";

    }
    
    
    return records;
  }