for(var i=0; i<=pages;i++) {
      top = i * config.ROWS_PER_PAGE;
      left = 0;
      width = config.DATA_PER_ROW;
      height = Math.min(config.ROWS_PER_PAGE, rowCount - i * config.ROWS_PER_PAGE);
      var ff = makeCallbackFunc(top, left, width, height);
      func.push(ff(function () {return true;}));
   }

  async.map(
    func,
        function(err, results){
            //???? Can not read the results output here!!??
            console.log('all calls called without any errors');
        });

  function makeCallbackFunc(top, left, width, height) {
    return function (callback) {
    console.log('top: ' + top + 'left: ' + left + 'width: ' + width + 'height: ' + height);
    return backendApi.getData([{
        qTop: top,
        qLeft: left,
        qWidth: width,
        qHeight: height
      }]);

    };
  }