Node.js async looping function

I am new to Node.js and am struggling to know if this is the correct way to do the following:

I am using lupus to handle the for loop, and I am querying the twitter API, I am then trying to get the largest id in the returned json, for this I am using lodash. Once I have this value I want to then run the loop again but this time with the value passed into the function. I loop through returned JSON with async.js

lupus(0, loopLength, function(n) {

        var maxId;

        T.get('favorites/list', {count: 200, max_id: maxId}, function(err, data, response) {
          if (err) {
            throw (err);
          }

          maxId = _.max(_.pluck(data, "id"));

          async.each(data, function(file, callback) {
            console.log(file)
          }, function(err){
            if( err ) {
              console.log('A file failed to process: '+ err);
          });
        })


      }, function() {
        console.log('All done!');
      });

It seems maxId never gets set so the .each loop never gets the next set of JSON. My question is am I doing this correctly, and how do I get the value of maxId from the .each function.