Using the xpath function in BizTalk expression shapes for getting and setting data

The xpath function is quite neat, you can use it in expression shapes for both getting and setting data. Here is an example:

xpath(AggregatedMessage, “/*[local-name()='EFACT_D95B_COARRI_ITG12' and namespace-uri()='http://schemas.microsoft.com/BizTalk/EDI/EDIFACT/2006']/*[local-name()='UNT' and namespace-uri()='']/*[local-name()='UNT2' and namespace-uri()='']“) =  xpath(AggregatedMessage,”count(//UNH)”);

This expression sets the element UNT2  (using the xpath expression above) in the message AggregatedMessage to a calculated value of  UNHs.  As you see, you may use xpath functions in your call, here I used the count() function. For getting a value of a node, simply used the function string(), for instance this could look like: receiverId = xpath(ContainerAnnouncement, “string(//UNB/S003_0010″);

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