Bind ctrl+up in muttrc

To: mutt-users@xxxxxxxx
Subject: Bind ctrl+up in muttrc
From: tchomby <tchomby@xxxxxxxxxxxxxx>
Date: Sun, 19 Oct 2008 20:37:43 +0100
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Does anyone know how to bind ctrl+up in muttrc? I tried:

    bind index \C<up> command
    
but it doesn't work.

Thanks