Getting supplier-id from a web-application (WebDynpro-Application)

Hi all together,

I have the following problem:

After starting the web-application (WebDynpro on WAS6.40) I need to get the supplier-id (R/3 supplier-id). Our application is integrated in a portal and has a connection to a R/3.

How can I get this information?

Thanks for helping me.

Regards

Thomas