SOAP method - structured parameters problem

Hi there, I've been using the PEAR::SOAP extension for a week now and have found some problems sending structured parameters. I have been trying to get in touch with the developers privately but got no result. As I'm not sure I'm asking at the right place, could you tell me if someone here is managing (or at least supporting) the SOAP extension and if my question is of general interest here or needs to be taken on another list? To be sure I'm not doing a useless step, here's my problem in more details... I'm using the SOAP_WSDL class and issuing queries with a simple list of parameters without any problem (I get accurate results and all). When I try to send a structure like this as parameter: <Participant> <Participant_Name>4</Participant_Name> <Date_Registration>2004-11-03</Date_Registration> <...other optional parameters here...> </Participant> a dump of my request before it is sent seems to give me a SOAP envelope like this: <SOAP-ENV:Body> <ns4:CreateParticipant> <ns4:parameters> <ns4:Participant> <ns4:Participant_Name>5</ns4:Participant_Name> <ns4:Date_Registration>2004-12-01</ns4:Date_Registration> </ns4:Participant> </ns4:parameters> </ns4:CreateParticipant> </SOAP-ENV:Body> As my request is apparently not correctly formatted (I get an error from the SOAP server on the other side), I am wondering why this <ns4:parameters> appears. The thing is: it only appears when I'm formatting my parameters into an array. I cannot find a way to do otherwise because I need the "Participant" element, so what I am issuing the call to the SOAP method like this: $result = $soap_client->CreateParticipant( array("Participant"=> array( "Participant_Name"=>$id, "Date_Registration"=>"25/11/2004" ) ) ); Does somebody know of a solution for this? Thanks a lot in advance, I am completely blocked by this problem so far... Yannick