Extract structured data from PDF

Hi community,

I am trying to extract some structured data from a PDF with data grouping, meaning first comes the table header, followed by the data grouping options and finally, the needed table.

The problem is that I cannot seem to be able to indicate where the table header is (being separated from the data itself by the grouping options) and Studio considers the first row to be the header, omitting one row from the extracted data.
The question is how can I get the first row in the table, what do I need to change in the data definition
extract-table get_columns_name=“0” get_empty_columns=“1” columns_name_source=“Longest”/ ?