wireshark - how to packet sniff webservices messages xml data stream content

we are debugging an issue we have with webservices and one of our clients, so we wanted to see that actual content data he was sending to a webservice at a specific port, so we installed wireshark.

i configured it to filter packages with the following filter text:
tcp.dstport == 9001 and data

at the bottom of the screenshot you can see the actual xml data stream that was sent to the webservice.

and here's the wireshark capture interfaces configuration--i just used "any" which captures on all interfaces.

note: in ubuntu linux you have to start wireshark as root:
sudo wireshark

otherwise you'll get the error/warning "there are no interfaces on which a capture can be done"