MAP toolkit 9.1 and windows server 2008 R2 RDP

Hi,

I can not be able to get number CAL usage on windows 2008 R2 server using MAP 9.1 but i can be able to get CAL installed on windows 2012 R2 server using this tool.

Does Any one know how to get the total number of CAL used on windows 2008 R2 ?

Regards,

BAsem