Re: Update row in Excel using dynamic content is not adding fields into row
Hi Denise,
You need to write an expression to get the value of 'ProfitCentre' property from the output array of Select action.
Here are the detailed steps to extract the value from Select action output:

1. Click & select the column to update in the excel, here I have chosen Serial# column to update.
2. Next, we will select 'Expression' option and type the below expression in the expression textbox. First() formula will get the first item of an array and then we will pull out 'ProfitCenter' value using indexer:
first(body('Select'))?['ProfitCenter']
3. Click, save & test your flow
If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.
Thanks