Updating Existing Rows in Clay Table Instead of Adding Duplicates

I have a clay table i’m adding rows to with the “write to other table” feature i’m doing this multiple times, and instead of new rows getting added for the same rows I want the existing rows that were added earlier to be updated if the domain is the same for example, if the table contains xyz.com in it already, instead of adding another row to the table with the same domain, just update the same row with the new datapoint that is to be added how to do this?