hi Tom,
You mean to say that you want to use webblock and populate each row into a webblock?
If its a webblock then you will have to create the webblock with the Ui, also have a input param which has the entity data or create a structure and use it in the Ui for showing the data and then from the main screen pass each current row of the list as a input to the webblock and then use it in webblock to populate it.