Record Collection - Help passing all tests except for one

Tell us what’s happening:
Getting this error “Cannot read property ‘push’ of undefined”

So far I’m passing all of the tests except for one . For some reason my code doesnt like " updateRecords(5439, "tracks", "Take a Chance on Me") , tracks should have "Take a Chance on Me" as the last element. " and I cannot figure out why. If anyone could explain as to why and what i need to do in future i would really appreciate it

Your code so far


// Setup
var collection = {
    "2548": {
      "album": "Slippery When Wet",
      "artist": "Bon Jovi",
      "tracks": [ 
        "Let It Rock", 
        "You Give Love a Bad Name" 
      ]
    },
    "2468": {
      "album": "1999",
      "artist": "Prince",
      "tracks": [ 
        "1999", 
        "Little Red Corvette" 
      ]
    },
    "1245": {
      "artist": "Robert Palmer",
      "tracks": [ ]
    },
    "5439": {
      "album": "ABBA Gold"
    }
};
// Keep a copy of the collection for tests
var collectionCopy = JSON.parse(JSON.stringify(collection));

// Only change code below this line
function updateRecords(id, prop, value) {
  if (prop !== "tracks" && value !== "") {
    collection[id][prop] = value;
    
  }

  else if (prop === "tracks" && value !==""){
    collection[id]["tracks"].push(value); 
  }

  else if (value == "") {
    delete collection[id][prop];
  }
  return collection;
}

// Alter values below to test your code
updateRecords(5439, "artist", "yeet");



Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/record-collection

the list wasn’t created yet when u tried to push something to it. you can either put a blank list in every id, or change appropriate code block to handle possible nonexisting list

  else if (prop === "tracks" && value !==""){
		if(collection[id]["tracks"]==undefined){
			collection[id]["tracks"]=[]
		}
		collection[id]["tracks"].push(value); 
  }

For this record

"5439": {
      "album": "ABBA Gold"
    }

there is no property collection["5439"]["tracks"] so you are trying to use the .push() method of something that does not exist.