Call BSP from another WAS

Hi all

I hava a BSP-Application on a WAS (lets say WAS1) and it works pretty well. But now I got a new request, to navigate to a different WAS (SEM BW -> WAS2) through a button on my BSP and call a BSP from there.

I tried with the direct url (navigation->goto_page(....) ) but then a login pop-up appeared, forcing the user to log onto the WAS2. Is it possible to navigate to a BSP from WAS2 without the login pop-up?

I tried also to pass user and password in the direct url but it didn't work, although SSO is set enabled (I tried the test page sso2test.htm and there no pop-up appeared).

Does any of you know how I can navigate to WAS2 BSP without login?

Thanks

Regards Melanie