send HTTP CGI Command disable Response

just need to send a CGI reboot command to network camera , after that command the camera reboots ,
so there is no Response ! (as i expect)
SOAPUI always expecting a Response ohterwise the Testcase fails ,
so how to just send a HTTP Request skipping the Response Expectation

assert messageExchange.hasResponse() == false
that doesn work , the testcase is still shown as fail