> I am using xpath within a BizTalk 2006 orchestration.
> I get the following error "Expression must evaluate to a node-set".
>
> My xml:
>
> <EmailListResponse xmlns="http://BTTest">
> <PersonContact EMailContactValue="test1@mail.com" />
> <PersonContact EMailContactValue="test2@mail.com" />
> </EmailListResponse>
>
>
> My xpath expression which generates the error message:
>
> varNoOfEmailAddresses = (System.Int32)xpath(msgEmailListRes, "count(/
> *[local-name()='EmailListResponse']/*[local-name()='PersonContact']/
> *[[local-name()='EMailContactValue']
> [not(text()=preceding::EMailContactValue/text())])");
>
> varNoOfEmailAddresses is a local orchestration variable
> msgEmailListRes is a local orchestration message
>
>
> Kan anyone tell me what I am doing wrong?
>
>
> I have the following xml and xpath expression, which does not fail
> (very similar):
>
> <SHT_Req xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance" > xmlns:xsd="
http://www.w3.org/2001/XMLSchema" xmlns="http://
> BTTest.Schemas.SHT_Req">
> - <Header xmlns="">
> <SHTRefId>20070130_12</SHTRefId>
> <SentAt>2007-01-30T00:00:00</SentAt>
> </Header>
> - <Body xmlns="">
> - <VesselIdentification>
> <IMONumber>3424</IMONumber>
> <MMSINumber>23424</MMSINumber>
> <CallSign>234</CallSign>
> <ShipName>20070130_12</ShipName>
> </VesselIdentification>
> - <AISInformation>
> <Longitude>3234</Longitude>
> <Latitude>234234</Latitude>
> <Timestamp>2007-01-30T00:00:00</Timestamp>
> <Destination>234</Destination>
> </AISInformation>
> - <NotifyCountries>
> <CountryCode>NOR</CountryCode>
> </NotifyCountries>
> </Body>
> </SHT_Req>
>
> varNoOfCountries = (System.Int32)xpath(msgSHT_Req, "count(/*[local-
> name()='SHT_Req']/*[local-name()='Body']/*[local-
> name()='NotifyCountries']/*[local-name()='CountryCode']
> [not(text()=preceding::CountryCode/text())])");
>
> varNoOfCountries is a local orchestration variable
> msgSHT_Req is a local orchestration message
