code: function getValueText(data) {
              let value = data[valueLabel];
              let valueText;
  
              if (data.missingValue) {
                  valueText = '-';
              } else {
                  valueText = getFormattedValue(value).toString();
              }
  
              return valueText;
          }
docs: Extracts the value from the data object
  @param  {Object} data Data value containing the info
  @return {String}      Value to show