LyX and xypic

[H. Peter Gumm]

I am using xypic with LyX 1.3.6-1 for Windows.
Angus Leeming kindly showed me how to do this:

  Place usepackage{xy} into the preamble and enter the
  xycode, e.g.
      \xymatrix{A \ar[r] B}
  into the lyx editor, then mark it and hit C-S-m.

This works with most of what I need from xypic, but not with
arrows that are bent upwards or downwards, e.g. when I replace
\ar[r] with
    \ar@/^/[r]
or
    \ar@/_/[r]
or
    \ar@/^1pc/[r]

Somehow, mathed does not interpret these key-sequence
correctly.

Any ideas, what to do ?

H.Peter