Add row to ALV in WebDynpro

Hey,

Because I'm a newbie to WD I got this question.

I implemented a ALV which gets one row of data by clicking my first button.

Now I want it to add a second row by clicking my second button. But what it does is just overwriting my first row. :/

The ALV gets his data like this:

- a internal table gets the data via a "SELECT" from a database table

- the internal table is bind to the context node with "bind_table"

- the ALV gets his data from the context node

So I'm not really sure what the node exactly stores (a table or just a row)?

AND

I thought about just append a row to the "existiting" ALV, but don't know where exactly so that the old data is not overwritten. :/

Thanks for any hints!