pass display value of lov to webservices

hi how can i pass lov display value not code for example i select office pretoria and save pta in database but what to pass pretoria to webservices

am in jdeveloper 11.1.1.6.0

this is how i called webservices

<methodAction id="approveOrganisation1" InstanceName="ApproveOrgAppTest"

                  DataControl="ApproveOrgAppTest" RequiresUpdateModel="true"

                  Action="invokeMethod" MethodName="approveOrganisation"

                  IsViewObjectMethod="false">

      <NamedData NDName="org_name"

                 NDValue="#{bindings.Organisationname.inputValue}"

                 NDType="java.lang.String"/>

      <NamedData NDName="regional_office"

                 NDValue="#{bindings.Officecode.attributeValues[0]}"

                 NDType="java.lang.String"/>

      <NamedData NDName="org_type"

                 NDValue="#{bindings.Organisationtypecode.attributeValues[0]}"

                 NDType="java.lang.String"/>