Extract Structured Data not working in C# project

In a project set as C#, I’m trying to do a simple data extraction using recording, but Extract Structured Data doesn’t seem to work.

At the end of the recording the extracted data showed for confirmation looks fine, it’s what I need.

But in the script, it doesn’t behave the same.

The DataTable type output variable IS initialized with “new System.Data.DataTable()” as the default value.

I uploaded the script here:
https://www.mediafire.com/file/0ndiy982qqr6sq9/j_test.zip/file

I’d appreciate any help.
Thanks.