pattrforward not working in a poly~ ?

Mathieu Chamagne's icon

I use pattforward in a patcher loaded in a poly~, and I need this
pattforward to control a named object in the main patcher (outside the
poly~) but I can't find the right message for pattrforward to tell him to
control this object ...
(please see this patch :
http://mathieu.chamagne.free.fr/max/pattrforward-in-poly~.zi p
)

maybe pattforward is not supposed to work inside a poly~ ?...
or maybe there's a "special" message to go outside a poly~ ?...
isn't the main patch the "parent" patcher of this poly~ ?
bug or feature ?...

maxmsp 4.5.7 /winXP pro SP2 /

thanks

Mathieu Chamagne
www.maxobjects.com