JavaScript create a Apache chart using a method

[Sarandis]

guys i have been asked to create a few Apache E-charts. the way i am doing it copy paste the whole code everytime pass the values i want and render the chart in the screen.
the problem is that if i have 10 charts on the screen then i have 10 blocks of code. one for each chart. therefore i am trying to create a method and every-time i need a chart call the method pass the values i want and render it to the screen.

here is what i have done:

    callTheMethod(titleText:String,titleButest:String,){
      // console.log("hi" + name +"your surname is"+ surname)

      this.myPieChart6 = {
        title: {
          text: titleText,
          subtext: titleButest,
          left: 'center'
        },
        tooltip: {
          trigger: 'item'
        },
        legend: {
          orient: 'vertical',
          left: 'left'
        },
        series: [
          {
            name: 'Access From',
            type: 'pie',
            radius: '50%',
            data: [
              { value: 40, name: 'Internal' },
              { value: 44, name: 'External' },
              { value: 40, name: 'Int/Ext' },
              { value: 32, name: 'Unclassified' }
            ],
            emphasis: {
              itemStyle: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: 'rgba(0, 0, 0, 0.5)'
              }
            }
          }
        ]
      };
  }

then i call the method like this:

callTheMethod("my chart","this is a subtitle",)

the problem i have is with the name of the chart - this.myPieChart6
i cant pass a parameter that everytime changes the name of the chart.
i dont want all the charts to have the same same- this.myPieChart6
i want to be able to differentiate them...
how i do that ?? any ideas?