Function module Table Parameter

Hi,

I have declared a Function module as RFC enabled and passing 3 table parameters as optional parameters. I have created Web Service on the same function module. But when I am testing the WSDL URL of that web service in SOAPUI its not showing that 3 table parameters as optional and also i have to pass values in all 3  table parameters otherwise web service is generating error message.

Please help me out.

Regards,

Maftun Ahmed Khan