text: var barChartData = {
  labels: [
  "Canais","Clearsale","Credito","Financeiro", "Plataforma", "Portal", "Tsys",
  "Canais","Clearsale","Credito","Financeiro", "Plataforma", "Portal", "Tsys",
  "Canais","Clearsale","Credito","Financeiro", "Plataforma", "Portal"],
  datasets: [{
      label: 'Chamados',
      backgroundColor: window.chartColors.blue,
      stack: 'Stack 0',
      data: [
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
          21,
          22,
          23,
          24,
          25,
          26,
          27,
          28,
          29,
          30,
      ]
  }]
  
  };
  window.onload = function() {
  var ctx = document.getElementById("canvas").getContext("2d");
  window.myBar = new Chart(ctx, {
      type: 'bar',
      data: barChartData,
      options: {
          title:{
              display:true,
              text: "Quantidade de chamados"
          },
          tooltips: {
              mode: 'index',
              intersect: false
          },
          responsive: true,
          scales: {
              xAxes: [{
                  stacked: true,
              }],
              yAxes: [{
                  stacked: true
              }]
          }
      }
  });
  };