updated JSON parsing

        if (target in jsonObject || target == null) {

          for (let objectKey in jsonObject) {

            let object = jsonObject[objectKey];

            let object = jsonObject[objectKey]['pset'];

            // Loop through each coordinate in the object

            for (let i = 0; i < object.length; i++) {

              let coordinate = object[i];

              // Extract x, y, z values

              let x = coordinate[0];

              let y = coordinate[1];

              let z = coordinate[2];

              let x = coordinate['x'];

              let y = coordinate['y'];

              let z = coordinate['z'];

              let r,g,b;

              if(objectKey == target){