[exim] piping through a program to an address

hello everyone,

probably a basic question here but I would like to check the correct
syntax and protocol;

If I want to use an Exim filter to conditionally pipe an email through a
perl program then onto a specific email address/mailbox, is the
following correct ?
It is the piping of the program's output onto an email address that I am
apparently having trouble with.
ie, I already know that I can and am successfully generating a correct
and usable output from the program itself.

Many thanks,
Lee

if $header_Reply-To: contains "abc@???"
then pipe "/home/www/perlprogram.pl '|xyz@???'"
finish
endif

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