Record Collection "tracks" shouldnt be set

JavaScript
#1

Tell us what’s happening:
So, I have tried almost everything solve this task, at the end have ended up just copy typing the tutorial video, yet, no idea what’s wrong here:
Would be grateful of any hints.
Thank you!
Best Regards

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"
}
};

// Only change code below this line
function updateRecords(id, prop, value) {
if (value === " ") {
delete collection[id][prop];
}
else if (prop === "tracks") {   
 collection[id][prop] = collection[id][prop] || [];
 collection[id][prop].push(value);
}
else {
  collection[id][prop] = value;
}

return collection;
}

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User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.19041.

Challenge: Record Collection

Link to the challenge:

#2

value is never equal to a space tho

#3