code: @Override
  	public void resetFixedValues(final String dataSetKey) {
  		fixedValues.remove(dataSetKey);
  		DataSet dataSet = getCurrentDataSets().get(dataSetKey);
  		if (dataSet != null) {
  			dataSet.resetFixedValues();
  		}
  	}
docs: Resets (= removes) fixed values for the specified {@link DataSet} key.
  
  @param dataSetKey
  The {@link DataSet} key.