DaseinUXD

echartb.on('legendselectchanged', function(params) {
    
    var legendObject = params.selected; // create variable from the selected: { object }
// console.log(legendObject) // {name: boolean-value, name: boolean-value}
    // console.log(Object.values(legendObject)); // log to the console boolean values out of the key: value pair 

    var value1 = (Object.values(legendObject)[0]); // assign the boolean value in index[0] to value1

    var value2 = (Object.values(legendObject)[1]); // assign the boolean value in index[1] to value2
// create a new option object to pass into myChart.setOption()

DaseinUXD

{
  "vars": {
    "@gray-base": "#000000",
    "@gray-darker": "lighten(@gray-base, 13.5%)",
    "@gray-dark": "lighten(@gray-base, 20%)",
    "@gray": "lighten(@gray-base, 33.5%)",
    "@gray-light": "lighten(@gray-base, 46.7%)",
    "@gray-lighter": "lighten(@gray-base, 93.5%)",
    "@brand-primary": "darken(#008b94, 6.5%)",
    "@brand-success": "#B5BF35",