Add fields inta a condition table (output message)

Hi,

I need to create a new condition table to determine an output purchasing message.

This new table needs two fields:

BSART – “Document class”

USER – “The user that is logged in”.

My intention is determine the printer, depending on the user and the document class.

Now I'm able to create a table with the BSART field, but I don’t know how I can add the username (because this field is not available at the selectable fields).

Maybe I have to modify the structure KOMKBEA… I’m not sure.

Does anyone can help me?

Thanks in advance,

Ricard.