title: how to update renderer.text() in highcharts after a graph has been drawn?
body: <p>In my application, which uses highcharts lib, i use svg draw function for my chart load/redraw events.</p>
  
  <p>I set all my chart data to equal value so that all the stacks will have same height, while the real data is kept in temp array that is drawn as svg in this way:</p>
  
  <pre><code>var dataFormat = getLabelByStatus(curCount, yearsObj[i].data[0]);
  
                          var css = (point.color == USERS_YEARS_COLOR) ? highchartAttr().dataLabelsBoldStyle : highchartAttr().dataLabelsStyle;
  
                          //  draw text
                          var text = renderer.text(dataFormat, -9999, -5).add(point.label);
  
                          text.attr({
                              x: (lineLength - text.getBBox().width) / 3
                          }).css(css)
  </code></pre>
  
  <p>This works great but now i want to change this data in a callback function.
  I still can access the renderer object, but neither i can find my old printed data to edit it, nor i can find a suitable edit function.</p>