Gateway Service Builder. Complex Types.

Hi,

I'm new to gateway services. I have a question regarding Complex Types.

My initial idea was to create a table  where each field is a table.  But it didn't work.

Is it possible to pass multiple tables in one Service? (E.g  table- 1SalesOrder  header fields table  item fields table

                                                                                                      2SalesOrder  header fields table  item fields table  )

Thanks in advance!