"between-system-space" command using OpenOffice

[gio]

Hello everybody,

I'm using Lillypond with OpenOffice. I'm not able to set the distance
beetween two systems. It seems to me that the command

\paper {
   between-system-space = 25\mm
}

is disabled by the command:

\include "lilypond-book-preamble.ly"

Can you help me?? Thanks!!

Giordano


ps. I'm not use to write in english, maybe I've done some grammatical
error..