title: Update the dataset of multiple AmCharts with a Single Dropdown Change Event
body: <p>I currently have 2 AMCharts on the same page and a single dropdown with values 2015,2016,2017,2018 in it.</p>
  
  <p>I have followed this example to dynamically update the data in the bar chart
      <a href="http://www.amcharts.com/tips/dynamically-loading-chart-datasets/" rel="nofollow">http://www.amcharts.com/tips/dynamically-loading-chart-datasets/</a></p>
  
  <p>I also have a Pie Chart and would like to update the data with the same drop down but I am not sure how to connect it so that it also updates at the same time.</p>
  
  <p>Any suggestions ?</p>