Open Analysis office workbook with URL

Hi,

I am trying to open an analysis workbook that is stored on Netweaver (not BI Platform) but from an URL instead of opening the Excel / Analysis application. Does anyone know the exact syntax? The best I am able to do right now is to open Analysis office itself with this link: http://mybwsystem.com:8000/sap/bw/analysis?APPLICATION=EXCEL

This opens up Analysis office but without any workbook loaded. There must be a syntax somewhere...I tried to add ?WORKBOOK=myworkbook, etc. but it's not working. I am unable to find this in the SAP documentation.

I am using analysis office 1.4.6 on Netweaver 7.4 SP6 so pretty recent.

Thanks

Christian