Yes, You right. But, at the end, I think that complex object elements are also send as XML.Am I right?
That object elements are:

 <devredilenKurum>3</devredilenKurum>
 <hastaKarneNo>111111216</hastaKarneNo>
 <hastaSosyalGuvNo>1111111111126</hastaSosyalGuvNo>
 <hastaTCKimlikNo>49000719000</hastaTCKimlikNo>
 <provizyonTarihi>22.12.2006</provizyonTarihi>
 <provizyonTipi>N</provizyonTipi>
 <saglikTesisKodu>10662</saglikTesisKodu>
 <sigortaliTuru>2</sigortaliTuru>
 <takipNo></takipNo>
 <takipTuru>1</takipTuru>
 <yakinlikKodu></yakinlikKodu>

I don't sure, if I put this xml to a string and I send this string as a parameter to the method?

>Ali tha methos is expecting to receive an object and not a string.
>
>>I tried so many different configuration, but I couldn't obtain return object from a webservice.
>>
>>WebService address is :
>>http://43000210000:43000210000@test.sgk.gov.tr/saglikws/services/ProvizyonIs
>>lemleri/wsdl/ProvizyonIslemleri.wsdl
>>
>>43000210000:43000210000 are username and password.
>>
>>I need to call HastaKabul method.
>>
>>Input parameter of this method as SOAP message is:
>>
>>

>><?xml version="1.0" encoding="utf-8"?>
>>
>><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
>>xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>xmlns:xsd="http://www.w3.org/2001/XMLSchema"
>>xmlns:enc="http://schemas.xmlsoap.org/soap/encoding" >
>>
>><soap:Body>
>>
>><impl:hastaKabul xmlns:impl="http://servisler.ws.gss.sgk.gov.tr">
>>
>><provizyonGiris>
>>
>><devredilenKurum>3</devredilenKurum><hastaKarneNo>111111216</hastaKarneNo><h
>>astaSosyalGuvNo>1111111111126</hastaSosyalGuvNo><hastaTCKimlikNo>4900071
>>astaSosyalGuvNo>9000
>></hastaTCKimlikNo><provizyonTarihi>22.12.2006</provizyonTarihi><provizyonTip
>>i>N</provizyonTipi><saglikTesisKodu>10662</saglikTesisKodu><sigortaliTur
>>i>u>2<
>>/sigortaliTuru><takipNo></takipNo><takipTuru>1</takipTuru><yakinlikKodu></ya
>>kinlikKodu>
>>
>></provizyonGiris>
>>
>></impl:hastaKabul>
>>
>></soap:Body>
>>
>></soap:Envelope>
>>

>>
>>I obtain this SOAP message by using StrikeIron Web Services Analyzer. With this analyzer, I can call the WS easly.
>>
>>How should I call this method?
>>
>>
>>lcXml = ??
>>

>>LOCAL loProvizyonIslemleri AS "XML Web Service"
>>LOCAL loException, lcErrorMsg, loWSHandler TRY
>>        loWSHandler =
>>NEWOBJECT("WSHandler",IIF(VERSION(2)=0,"",HOME()+"FFC\")+"_ws3client.vcx")
>>        loProvizyonIslemleri =
>>loWSHandler.SetupClient("http://43000210000:43000210000@test.sgk.gov.tr/sagl
>>ikws/services/ProvizyonIslemleri/wsdl/ProvizyonIslemleri.wsdl",
>>"ProvizyonIslemleriService", "ProvizyonIslemleri")
>>
>>        leResult = loProvizyonIslemleri.hastaKabul(lcXml)
>>
>>CATCH TO loException
>>        lcErrorMsg="Error: "+TRANSFORM(loException.Errorno)+" - "+loException.Message
>>        DO CASE
>>        CASE VARTYPE(loProvizyonIslemleri)#"O"
>>               * Handle SOAP error connecting to web service
>>        CASE !EMPTY(loProvizyonIslemleri.FaultCode)
>>               * Handle SOAP error calling method
>>               lcErrorMsg=lcErrorMsg+CHR(13)+loProvizyonIslemleri.Detail
>>        OTHERWISE
>>               * Handle other error
>>        ENDCASE
>>        * Use for debugging purposes
>>        MESSAGEBOX(lcErrorMsg)
>>FINALLY
>>ENDTRY
>>