Call Bex Workbook with parameters via ABAP

Dear all,
I have a problem with Excel workbook run from the functional module and transfer parameters to it.
For this purposes I have used FM RSAH_LAUNCH_EXCEL. I use SAP BW 2004s version.
In fact this FM opens the Excel workbook but these parameters (that were defined in the table I_T_VAR) are not available in Excel. The window with variables pops up anyway and fields in this window are empty.
What I would like to do finally is to run this Excel workbook, send some parameters to avoid of appearing this window. It was possible to do in Sap BW 3.5 (according to my experience). Probably it is possible to do in some other way in 2004s? If you know please give me a clue.
One more question: I try to use the function SAPBEXsetVariable() in BeX that I used to use in 3.5. In 2004s it is not available. Does somebody know what can be used instead of it in 2004s?
Thanks in advance.

How about putting values of variables into filter area of WB?

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