Tough Futures question

gistfile1.txt

    put.on('progress',function(progress){
      // Update SOMETHING with the progress data
      Meteor.bindEnvironment(function(){
        S3files.update({file_name: file.name}, {$set: {percent_uploaded: progress.percent}});
      },function(err){
        console.log(err);
      });
    });

put.on('progress',Meteor.bindEnvironment(function(progress){
    S3files.update({file_name: file.name}, {$set: {percent_uploaded: progress.percent}});
  },function(err){
    console.log(err);
  }));