How to set Application Parameters in web dynpro application

Hello everyone,
I have a requirement where I need to set a table as a scrollable table , as i go through this link
[http://help.sap.com/saphelp_nw04s/helpdata/EN/b5/ac884118aa1709e10000000a155106/content.htm]
I found that there is a application parameter WDTABLENAVIGATION which needs to be set to SCROLLBAR
I checked on every bit in nwds for the DC where I can set this parameter but could nt find it .
Can anyone please help me out in finding this and making my table scrollable.
regards,
Raj

Thanks for the response arindam,
Do you have any idea how to set value , i tried with some values and it has been ending up in errors.
Kindly help me out ..
Regards,
Raj

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