## add_multilevel_value(series_name, categories, Values) {#str_chartmultilevelvalue_floatlist} Adds new [ChartSeries](../../chartseries/) to this collection. Use this method to add series that have......add_multilevel_value(series_name, categories, values) {#str_char...```python def add_multilevel_value(self, series_name: str, categories:...