Json parsing empty value

Hello,

I've implemented some code because of the changes on the new version which is coming and do not support DB.Executor.

But when i'm executing my source code, the json result is dynamic : i've only the fields which are not empty.

In order to have a great code i've parse the json. So the format is correct that's a great json but I don't know how can I include empty field/value.

Is there somebody who can explain me how can I do in order to include all fields in the object to the json return list?

Thanks a lot.