Understanding the question

after reading a couple of times, i still dont really understand what do i need to do (maby because english its my second languge)
what do i need to check?

// Setup
var 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) {
return records;
}

updateRecords(recordCollection, 5439, 'artist', 'ABBA');

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Challenge: Record Collection

Link to the challenge:

the function is passed an object, which is a collection of musical albums infos, and your function needs to update one of those albums based on the other three parameters, id, prop, value. id says which album to update, prop and value how to update it, following the rules in the challenge description