Q&A not working against my OLAP Cube

Hi,

I setup a connection to my olap server. Everything is working fine...

except the Q&A feature, the system is never able to answer any question, and there is no access to my OLAP server.

is the Q&A working to SSAS OLAP Servers? (both OLAP and Tabular modes)

if yes, how? (Excepts checking the Q&A option in the settings page)