Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
Sorry but there's no method or option to remove specific values of a chart. We move the request to the dev team to consider adding support in a future release of phpdocx.