I'm fighting with this piece of code. I get result back from a PHP call and data does infact get populated. Alerting out setName show the correct value, but the next line (7) doesn't work. 

Any ideas?

2. function(data)
3.         {
4.             var images = data;
5.             var setName = images['set'][0].name;
6.             alert(setName);
7.             $('set-name').val(setName);
8. 
   
9.         });