UDJC - Creating rows at dispose() method

I am creating an integration between kettle and another application.

So, in the processRow() I need to read all the rows before to create an script.

Then, in the dispose() I have to pass the script to another application and get back the resultset from that application.

But now, I need at dispose() create new rows using only the resultset.

How can I at dispose() method create new rows for the step output ?

I couldn't find no example or documentation about it.

Regards.