Start multiple libreOffice instances?

hi, all:

could you help me with the problem: how can I start multiple libreOffice instances?

I tried the following command:

/opt/libreoffice3.5/program/soffice --headless --accept=“socket,host=127.0.0.1,port=2001;urp;” --nofirststartwizard &
/opt/libreoffice3.5/program/soffice --headless --accept=“socket,host=127.0.0.1,port=2002;urp;” --nofirststartwizard &
/opt/libreoffice3.5/program/soffice --headless --accept=“socket,host=127.0.0.1,port=2003;urp;” --nofirststartwizard &
/opt/libreoffice3.5/program/soffice --headless --accept=“socket,host=127.0.0.1,port=2004;urp;” --nofirststartwizard &
/opt/libreoffice3.5/program/soffice --headless --accept=“socket,host=127.0.0.1,port=2005;urp;” --nofirststartwizard &

but, finally, there is only one LibreOffice instance left, with port NO is 2001.

Try here, I guess installing the same version in parallel twice will work.