Hi John! You always need to, when accessing an object's property, use a period or square brackets.**
this[i] is returning an object from the array, so to access its properties you need to use dot or bracket notation.
It makes more sense to use dot notation here, but you could also use
Let me know if you have any other questions!
** There may be some other funky ways using
eval or something, but I don't think there are any other standard ways of access object properties in es5.