SOAP and nested input

Hello! If I need to pass nested input to a SOAP function; For example a function that requires these parameters: <foo>bar</foo> <foonest> <barnest>foobar</barnest> </foonest> Should I simply nest two arrays to the php soap function, i.e: $client->foo(array("foo" => "bar", "foonest" => array("barnest" => "foobar")); 'm having some trouble with a SOAP server, and I'm not sure if I passed the params incorrectly or something else is wrong. The exception I get is: Catchable fatal error: Object of class stdClass could not be converted to string. Thanks for your time! Regards Emil