[Solved]-Updating data in charts, highcharts with angular, highcharts-ng-Highcharts

The xAxis should be an object and not an array. The config should be set up like so:

    xAxis: {
        categories: ['old bar title', 'old bar title 2 ']
    }

And the update should be:

    $scope.chartConfig.xAxis.categories = ['new bar title', 'new bar title2'];