Filter From Data Tree - Not Available in Query Studio

[Penny]

We have Cognos 10.1 installed.  When I rightclick a query item from the 'data tree' I do NOT see a filter option, yet the Cognos documentation recommends filtering from tree.  I have seen other sites with this question posted, but none with an answer.  The filter option does appear in Report Studio.  Can anyone help me find out how to enable this? 

Thank-you...new with Cognos.

[MFGF]

Hmmm...

I don't have 10.1 to hand, but in 10.2.1 the option is there...

Regards,

MF.