Problems enabling webi MDX logging

Hello experts!

I'm trying to enable the webi MDX logging in order to check the webi MDX queries sended to SAP BW but it doesn't work.

I followed the instructions from the sap note 1260004 (changing the registry path because the system is Win 2008 R2 64 bits) but the log file is not generated.

FYI, the registry entry:

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Business Objects\Suite 12.0\MDA\Log\Modules]

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Business Objects\Suite 12.0\MDA\Log\Modules\SAPMODULE]

"verbosity"=dword:0000000a

"MDX Query Log"="C:\MDX.log"

Any idea how to activate the MDX logging??

Or, do you know another tool or procedure to check the MDX queries from webi?

Thanks in advance!