Why I can't access id and prop with .notation?

Tell us what’s happening:
Describe your issue in detail here.

  **Your code so far**
// Setup
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) {
return records;

updateRecords(recordCollection, 5439, 'artist', 'ABBA');
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.61 Safari/537.36

Challenge: Record Collection

Link to the challenge:

If you use .notation you specify the actual name of the property. You can’t use variables like that. If you write something like obj.prop then js will think that the “prop” is a name of a property of the object, it won’t evaluate it as a variable. If I understood you corerctly.

1 Like

That’s my question literally.

So, always if prop is a variable I should use bracket notation

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