Sharepoint integration via Microsoft Flow

Hello :)

I used Microsoft Flow to create a workflow which adds a row into a sheet in smartsheet whenever a new item is created on a sharepoint however I cannot get around the situation with updating the sharepoint item. I want to have a "live" or "active" connection to smartsheet - meaning if the person who created the item change something in the item itself, this to be reflected in smartsheet.

My flow is:

When an item is created or modified -> Insert a new row in SmartSheet.

With this flow whenever I change something in the item a new row is being inserted into smartsheet with only the changed value whereas i want to have it updated within the original row.

Any ideas?