Recordcollection challenge

Tell us what’s happening:
Describe your issue in detail here.
i have no idea why my code wont work. i kept double checking to see the variables and syntax is correct. but one of the tests just do not pass. and thats pushing the track to the end of the array.

  **Your code so far**

// 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) {
if (prop !== "tracks" && value !== ""){
 records[id][prop] = value;
}else if (prop === "tracks" && records[id].hasOwnProperty["tracks"]===false){
  records[id][prop] = [value];

} else if (prop === "tracks" && value !== ""){
}else if (value === ""){
  delete records[id][prop];
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/91.0.4472.124 Safari/537.36

Challenge: Record Collection

Link to the challenge:

check this syntax, check really carefully and correct it

omg , i been looking at it all day. was so obvious and well so hidden. thanks

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