Send two parameters through SOAP

Hello, everyone. i'm have a problem with invoke soap operations through orchestrator workflow "Invoke a SOAP operation".

SOAP service need a two string value like this:

<Script name="PS_test" runAt="Server">

               <Parameters>

                <StringVal name="os">linux</StringVal>

                <StringVal name="dns">testmachine</StringVal>

               </Parameters>

      </Script>

but in orchestrator only one parameter with name StringVal may be.

if i set in a wsdl-file os and dns my service won't work.

<s:complexType name="ScriptParameters">

<s:sequence>

<s:choice minOccurs="0" maxOccurs="1">

<s:element minOccurs="0" maxOccurs="1" name="os" type="tns:StringVal" />

<s:element minOccurs="0" maxOccurs="1" name="dns" type="tns:StringVal" />

</s:choice>

</s:sequence>

</s:complexType>

[2016-05-27 17:41:15.535] [I]   + name: 'Script.Parameters.dns', value: 'netgreg'

[2016-05-27 17:41:15.536] [I]   + name: 'Script.Parameters.os', value: 'aergerg'

How send a two Script.Parameters.StringVal with different value?