Why won't .join() work on my array?

Why won't .join() work on my array?
0

#1

var string = "Split me into something";
var array = [];

// Only change code below this line.

array = string.split(' ');
array.reverse(' ');
array.join(' + '); // This for some reason isn't executing 

#2

Works for me. Are you getting an error message?