title: HighCharts - number format with $ in its short form
body: <p>I'm using dotnet.highcharts to generate a chart.</p>
  
  <p>If I do not set any label formatting on the y-axis labels, this is what is displayed.</p>
  
  <p><img src="https://i.stack.imgur.com/t275T.png" alt="enter image description here"></p>
  
  <p>This is good. 
  So 200M = 200,000,000
  And it looks like this is done automatically. </p>
  
  <p>If I wanted to put a $ in front of the value and I use:</p>
  
  <pre><code>function() { return '$' + Highcharts.numberFormat(this.value, 0) ; }
  </code></pre>
  
  <p>Then the label will now display $200,000,000.</p>
  
  <p>How would i get the format to display it with the short form with the dollar sign like $200M ?
  thanks.</p>