Running a perl script from procmail

Hi,

What I want to do is have procmail perform some file maintenance for 
me upon reciept of certian messages from me at another account.  The 
results of the maintenance are saved to a file, and then the file is 
mailed to me via elm.

My scripts work fine when run manually, but I get buggy results when 
procmail calls them.

This is the pipe I have been trying to use - with strange results.

| perl $HOME/bin/maintain 

Thanks.