Java FX Charts

Hello, I learning about JAVA FX charts and their behavior. I am currently working on two charts. 1 BarChart 2 Pie Chart\n\nI have 5 countries listed as bar and the height tell the amount of votes the country have received(For both charts). I have 2 functions to make it grow everything each bar or wedge is clicked. But I cannot figured it out how to do so when I click a countrie in my bar char it will also grow on my piechart. They have the same information.