[Moo] Mootools Jsonp not updating variables

[electronbender]

I have a global variable called sections.

However, on a certain onclick event, i want to grab those sections via
Jsonp and update them.

So my come looks something like this:

var sections = [bla];

new Request.JSONP({
    url: 'someurl',
    onComplete: function(theData){
    sections = theData;
    doStuff();
    }
}).send();

var doStuff = function(){
  console.log(sections);
}
But if i run that, i get that sections is still equal to [bla] and not
[foo] which the json data should be.

Why is that?