I get this message from testparm

Warning: Service pdf-printer defines a print command, but print command parameter is ignored when using CUPS libraries.
Server role: ROLE_STANDALONE
Press enter to see a dump of your service definitions

and this is my .conf

[global]
        workgroup = RSA
        netbios name = RSA-INTRANET
        server string = RSA-INTRANET
        map to guest = Bad User
        passdb backend = tdbsam
        log file = /var/log/samba/log.%m
        dns proxy = No

[pubblico]
        comment = condivisione pubblica
        path = /var/pubblico
        read only = No

[pdf-printer]
        path = /var/pubblico/
        create mask = 0700
        guest ok = Yes
        printable = Yes
        print command = /usr/bin/printpdf.sh %s
        printer name = lp

everyt hings works ok, but the print command isn't executed altough the printer is shared and visible on the lan.

thanks for any help

However, we found that Samba was not really happy with both real CUPS
printer shares and a virtual PDF printing script, so we have moved to
PDFCreator (www.pdfforge.org) on the clients instead.  It lets you use more
features than the server-side script too.

[It's better English to say "working well" than "working good"]

Moray.
"To err is human; to purr, feline."