Docx from dynamic template

Hello I,m trying to use the Docx from dynamic template, but is not working, I´m trying to map the data below.

 «${doc.client.contract}»

"<client> <contract>This is a simple placeholder</contract> </client>" 

When I run the process the node is not generating the docx document, can anyone, give me some input on what I´d doing wrong?

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