title: javascript Highcharts over option change backgroung color
body: <p>I have 5 days trying to change color zone, this's code:</p>
  <pre><code>   [https://jsfiddle.net/gerarca/7sg1c4nz/187/][1]
  </code></pre>
  <p>I just want to change backgroung color on over event, like:</p>
  <p><a href="https://i.stack.imgur.com/SRW7G.png" rel="nofollow noreferrer">enter image description here</a></p>
  <p>If I put the mouse pointer over a department, an area should be highlighted in red, the area to which the department belongs.</p>
  <p>I tried to do it using multiple overs, but this property can only be used once and don't work.</p>
  <p>where I'm wrong??</p>