sieve: store string list in varable

Hi,

I'm working on a Sieve script and want to store a list of addresses in a variable to easily access the list multiple times later.

For example I want to transform this:

if address :is "from" ["daffy.duck@example.com", "porky.pig@example.com", "speedy.gonzales@example.com"] { fileinto "friends"; }

into something like this:

require ["fileinto", "variables"];

set "friends" ["daffy.duck@example.com", "porky.pig@example.com", "speedy.gonzales@example.com"]

if address :is "from" $friends { fileinto "friends"; }

Any ideas on this?

regards Knut