Assigning SSL to Open Source ePrint

I want to assign an SSL to the open source ePrints that coded by perl. It needs someone with Excellent background of Linux+Perl+SSL. I bought a wildcard 123 SSL and I assigned it to the main domain and all the subdomains. It was working perfect, but not with the ePrints. Summary: We installed the SSL on the server Plesk, the Plesk is making a reverse proxy to the request that going to ePrint with is based on Perl, but the https is not working between the ingenix of the Plesk and the ePrints.