Also, I don't believe force_send_socket() accepts PVs as arguments. But $fs accomplishes the same end, and is a mutable PV. -- Alex Balashov - Principal Evariste Systems LLC 260 Peachtree Street NW Suite 2200 Atlanta, GA 30303 Tel: +1-678-954-0670 Fax: +1-404-961-1892 Web: http://www.evaristesys.com/