SIEVE variables not working

[David Meier]

When I am sending mailto notifications the following variables are not resolved:

$env-from$
$text$
$text[n]$

However notification works and $from$ and $subject$ are resolved as expected. I do get 
a notification mail body like this (without #, of course):

# David Meier <[EMAIL PROTECTED]>, $env-from, Subject text, $text$, $text[20]$
#
# Action(s) taken:
# Kept


Here is the code from the filter script:

require 
["fileinto","reject","vacation","imapflags","relational","comparator-i;ascii-numeric","regex","notify"];

header :contains "From" "davemeier"
{
keep;
notify :method "mailto" :options "[EMAIL PROTECTED]" :id "" :low :message "$from$, 
$env-from, $subject$, $text$, $text[20]$";
                                                                                
}

Any ideas? Thanks. Dave