Multi Language Reports

I am using an  English ENU Siebel Objectmanager and try to generate BIP Reports in different langugaes.

This is working fine, however the output of each language report is not well formatted, like data format in Germany is not displayed like it should be.

Do I add any language format stuff to the BIP server ?

or do I need to run a German  DEU Siebel Objectmanager and generate the BIP Report from a german siebel object manager ?

thanks