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Jasper Reports - Help needed to concatenate the contents of a node.

 
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My jasper report uses an XML file as the datasource. Below is my XML code.



Here is my JRXML report design.



How can I concatenate the contents of the node <p:TransactionDetailText> and show it as a sentence in my report. My issue is, the number of <p:TransactionDetailText> nodes will not be constant. So I will not be able to use the XPATH's concat function.
 
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