Use orchestrator to update all grid lines of a grid

I am looking for a way to update all grid lines of a grid using orchestrator, without having to manually input to the orchestrator which lines to update.

On MOS I found an example of an orchestrator that copies sales orders by using two form requests : the first form request retrieves the sales order lines into a dataset and the second form request adds them into a new sales order. It works fine, however, in my case I need to update all lines of a specific order with a value in the Location column.

It does not seem to work with update mode because you need to input which row you want to update in the "update" action.