To Create Simple Bar Chart In JQuery HighCharts And MVC 2 Application?

I'm trying to create a very simple bar chart using the results of a JSon action method in MVC. I get the actual bar chart, but I don't understand the options and all that well enough, so I'm basically guessing what to do. I used the example on the HighCharts site as an example for how to get data from server code and create a chart. The difference is my chart is simpler than the example. I don't have categories for each user (as in the fruit example), I only have a user and a number of hours logged.

Here's the HighCharts jQuery code:

function getHighChart() {
var actionUrl = '<%= Url.Action("GetChartData") %>';
var customerId = $('#customersId').val();[code]....

I was able to create a pie chart, but now when I want to create a simple bar I'm not able to work out what is what in the jQuery code, so the results I get is a bar where first of all the only user listed in the legend is the last one in the array. Secondly, the tooltip shows x = [The user's name], y = 29, instead of [The user's name]: 29, which I got in the pie chart.How would I create such a simple bar chart in HighCharts from this JSon?