Add Mikrotik Active Hotspot Graph

can you add a graph for mikrotik to show Active number of Hotspot Users

I found a value to use for it .1.3.6.1.4.1.9.9.150.1.1.1.0

http://mail.butchevans.com/pipermail/mikrotik/2010-March/002188.html

http://oid-info.com/get/1.3.6.1.4.1.9.9.150.1.1.1.0

it appears to be related to the ciscoAAASessionMIB

OR

http://mail.butchevans.com/pipermail/mikrotik/2010-March/002187.html

and you WALK the value and count how many to get a number