[Chart Stacked multi-series]

Hi,

 I would like to know how to set unit symble like % or $ or GB or Kb in jChartFX.  Ex: in Y axis lets have 10 GB, 50 GB, 100 GB, 200 GB ...etc

 I am about it use it for disk space notification, so i need to use GB format. 

 I have searched JchartFx documentaiton and got to know that the following kindda could be used,

 chart1.getAxisY().getLabelsFormat().setFormat(cfx.AxisFormat.Currency); 

 but where can i find the all available label formats?   like  cfx.AxisFormat.Currency, cfx.AxisFormat.Storage, cfx.AxisFormat.X, cfx.AxisFormat.Y, cfx.AxisFormat.Z

 Does the documentation has what is X,Y or Z that could replace Currency???