Hi everyone,
I may be trying to do something that is impossible given the constraints of Power Automate and Excel, but I had to try to make life easier for our staff. Here is the situation.
First off, the agency I am working for does not have a Microsoft subscription that includes Office Scripts, so all of those solutions are out.
We have grant applications that will be coming in that need to have a budget included. Last year an Excel file was provided for the applicants to fill in, but many of them had such limited Excel use that an excessive amount of staff time was spent answering questions about how to complete the Excel file's worksheets. To try and eliminate that headache, I had the idea to create a flow for a Form I created where the applicant can fill in the data and then take the information from the Form straight into a new Excel file for that applicant. After trying and failing to make that work I set the Forms data to use Power Automate to update a SharePoint list since lists seemed to talk better with Excel. I need to take the list and fill in an Excel template.
The flow for updating the list works perfectly. I have an Excel template created with the necessary tables. The problem comes when trying to update the Table with the information from the list.
Here is the table I need to fill.

Here is my current try at updating the file.


Get tables and List Rows both are working, but I am stuck on actually filling in the template without the use of Office Scripts.
Here is the first part of my compose action for filling in the table with the list data:

I seem to have all the pieces, but am struggling to put it all together. I really need this to work to save our staff time by filling out the Excel sheet for the applicant and thus eliminating hundreds of questions about how to use an Excel workbook.
Like I said at the beginning, I might be trying to do something impossible, but if there is any way to get this Excel template filled it would save my agency tons of man hours when we don't have the staff to walk each applicant through Excel.
Thank you so much in advance for any help you can provide.