I set :

         function drawChart1() {

      // Create the data table.
      var data = new google.visualization.DataTable();
      data.addColumn('string', 'Topping');
      data.addColumn('number', 'Slices');
           data.addRows([
        ['Excelenta', <?=$tip3?>],
        ['Buna', <?=$tip2?>],
        ['Slaba', <?=$tip1?>]
      ]);

      // Set chart options
      var options = {'tooltip.text':'percent',
          'title':'Cum a fost calatoria dumneavoastra cu <?php echo
ucfirst($compania);?>?',
                     'width':650,
                     'height':300,
                                        };

      // Instantiate and draw our chart, passing in some options.
      var chart = new
google.visualization.PieChart(document.getElementById('chart_div1'));
      chart.draw(data, options);
    }

but in render I see tooltip.text both.
What is the problem?
Thanks

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