Check if an Object has a Property 112

Tell us what’s happening:
i just dont understand what is wrong with this. i checked it on the scratchpad firefox and gives me true. so what is happening here i need answers.

Your code so far

let users = {
  Alan: {
    age: 27,
    online: true
  Jeff: {
    age: 32,
    online: true
  Sarah: {
    age: 48,
    online: true
  Ryan: {
    age: 19,
    online: true

function isEveryoneHere(obj) {
  // change code below this line
   if(('Alan' in users && 'Jeff' in users && 'Sarah' in users && 'ryan' in users)){
    return true;
  else {
    return false;
  // change code above this line


Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0.

Link to the challenge:

Check your strings. You have a slight typo.