It should have worked with - message.setHeader("MaxRecords", 999999);
Well, when you dont use custom scripting, you are able to get backend data for employees data?
i assume, you dont have written any logic in processRequestData function that means entitysets and its properties have the same name as tables and its columns.
cc: Carlos Roggan
Note: Please remove all company related info while posting on public forum. (e.g. OData url)
Regards,
JK