if (chart === 'c1') {
        currentChart = this.c1;
      } else if (chart === 'c2') {
        currentChart = this.c2;
      } else if (chart === 'c3') {
        currentChart = this.c3;
      }
      currentChart = data.filter(o => {

if (chart === 'c1') {
    currentChart = this.c1;
  } else if (chart === 'c2') {
    currentChart = this.c2;
  } else if (chart === 'c3') {
    currentChart = this.c3;
  }

currentChart = this[chart];

currentChart = ['c1', 'c2', 'c3'].includes(chart) ? this[chart] : null;