JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://s3.amazonaws.com/flexmonster/2.3/demo.css">
<script src="https://cdn.flexmonster.com/flexmonster.js"></script>
<button id="a" onclick="multipleMeasures(false)">
Hide multiple measures
</button>
<button id="a" onclick="updateTheData()">
Update the data
</button>

<div id="pivot-container"></div>

JavaScript

let pivot = new Flexmonster({
  container: "pivot-container",
  componentFolder: "https://cdn.flexmonster.com/",
  width: "100%",
  height: 600,
  toolbar: true,
  report: {
    mapping: {
      Date: {
        type: "date string"
      }
    },
    dataSource: {
      data: getData()
    },
    slice: {
      rows: [{
        uniqueName: "Nombre de phrases"
      }],
      columns: [{
        uniqueName: "[Measures]"
      }],
      measures: [{
          uniqueName: "Nombre de mots",
          aggregation: "sum"
        }
      ],
    },
    options: {
      viewType: "charts",
      chart: {
        multipleMeasures: true,
        type: "column"
      }
    }
  }
});

function multipleMeasures(val) {
  let options = pivot.getOptions();
  options.chart.multipleMeasures = val;
  pivot.setOptions(options);
  document.getElementById("a").setAttribute("onclick","multipleMeasures("+!val+")");
  document.getElementById("a").innerHTML=`${val===true ? `Hide`: `Show`} Multiple Measures`;
  pivot.refresh();
}

function updateTheData() {

    jsonData = [{
        "Nombre de mots": 800,
        "Nombre de phrases": 3
      },
      {
        "Nombre de mots": 100,
        "Nombre de phrases": 5
      },
      {
        "Nombre de mots": 200,
        "Nombre de phrases": 7
      }
    ];
    
	flexmonster.updateData({ data: jsonData }); 
}

function getData() {
  return [{
      "Nombre de mots": 50,
      "Nombre de phrases": 2
    },
    {
      "Nombre de mots": 100,
      "Nombre de phrases": 5
    },
    {
      "Nombre de mots": 200,
      "Nombre de phrases": 7
    }
  ];
}