[Scribus] printing custom size to a postscript file

[Ekkard Gerlach]

Hi, 

I want to print a custom sized drawing (5cm longer than
A4) to postscript file. But the result is alway A4. 
The top is cutted with 5cm. 
Here is my document:  http://www.aiai.de/

Using Suse 8.2, scribus 1.2.1

tia
Ekkard