Invoking Web Service with array paramter

Question

Hi,
I'm trying to invoke a Java web service having an array as input parameter but it only works if i have only one child or if i chose one specific element with xpath.
bpel variables:
<variables>
<variable name="mergedSupps" element="client:suppliers"/>
<variable name="Invoke_1_getRating_InputVariable" messageType="ns1:getRating"/>
<variable name="Invoke_1_getRating_OutputVariable" messageType="ns1:getRatingResponse"/>
</variables>
this works:
<assign name="Assign_1">
<copy>
<from variable="mergedSupps" query="/client:suppliers/client:suppID[1]"/>
<to variable="Invoke_1_getRating_InputVariable" part="parameters" query="/ns1:getRating/suppID"/>
</copy>
</assign>
does not work:
<assign name="Assign_1">
<copy>
<from variable="mergedSupps" query="/client:suppliers/client:suppID"/>
<to variable="Invoke_1_getRating_InputVariable" part="parameters" query="/ns1:getRating/suppID"/>
</copy>
</assign>
wsdl:
<element name="suppliers" type="client:supplierType"/>
<element name="procRatingTestProcessRequest" type="client:requestType"/>
               <element name="procRatingTestProcessResponse" type="client:responseType"/>
     <complexType name="requestType">
<sequence>
                              <element name="suppliers" type="client:supplierType"/>
                         </sequence>
                    </complexType>
               <complexType name="supplierType">
     <sequence>
                              <element name="suppID" type="string" maxOccurs="unbounded"/>
                         </sequence>
                    </complexType>
                    <complexType name="responseType">
                         <sequence>
                              <element name="rating" type="double"/>
                         </sequence>
                    </complexType>
java:
@WebMethod
public double getRating(@WebParam(name= "suppID") String[] s) {
anyone can help?????

Answer 1

Sorry i was trying around too much, it was empty some other time ;)
when i try:
<assign name="Assign_1">
<copy>
<from variable="mergedSupps" query="/client:suppliers/client:suppID"/>
<to variable="Invoke_1_getRating_InputVariable" part="parameters" query="/ns1:getRating/suppID"/>
</copy>
</assign>
i get:
<selectionFailure>
<part name="summary" >
<summary>
XPath query string returns multiple nodes. According to BPEL4WS spec 1.1 section 14.3, The assign activity part and query /client:suppliers/client:suppID should not return multipe nodes. Please check the BPEL source at line number "70" and verify the part and xpath query /client:suppliers/client:suppID.</summary>
</part>
</selectionFailure>