Ytukyg

I want to create an extension that make a pie chart of the different material of my BIM Model appear in Forge Viewer. I followed the learn forge tutorial and if worked. When I clicked on the new toolbar button, the alert "I am an extension" appeared.
However, now that I am replacing this line by my code, nothing appears when I click on the button.
I am using chart.js for the pie chart.

Here is my code replacing the alert('I am an extension"); line :

     var ChartToolbarButton = new Autodesk.Viewing.UI.Button('runMyAwesomeCode');

ChartToolbarButton.onClick = function () {var Chart = require('chart.js');

  var ctx = document.getElementById("myPieChart");

  var myPieChart = new Chart(ctx, {

      "type":"pie",

      "title":{

        "text":"Pie Chart"

      },

      "series":[

        {"values":[59]},

        {"values":[55]},

        {"values":[30]},

        {"values":[28]},

        {"values":[15]}

      ]

    });



  // **********************

  //

  //

  // Execute an action here

  //

  //

  // **********************

As you can see, for now I am just trying to make a piechart appear, something simple to start with.