VerticalAxisGroup #'minimum-Y-extent

[Thomas Scharkowski]

Hi,

in the followng example the \override does not seem to have any effect.
What ist wrong?

Thanks
Thomas

--
\version "2.13.4"
\score {
        <<
        \new Staff {
        c'1
        \break
        c'
        }
        \new Staff {
        c'1
        \break
        c'
        }
        >>
        \layout {
        \context {
        \Staff
        \override VerticalAxisGroup #'minimum-Y-extent = #'(-12 . 12)
        }
        }