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Question

A web client submits a request to http://localhost:8081/books/0471767840. The value "0471767840" is captured by a Set Variable transformer to a variable named bookISBN. What is the DataWeave expression to access bookISBN later in the flow?

Answer

A) bookISBN
B) attributes.bookISBN
C) flowVars.bookISBN
D) vars.bookISBN

The correct answer to this question is D.

Explanation

To access a value of any flow variable, it is necessary to use "vars." before the name of the variable.