how i achieve this first loop run column a first values then run b and c column all iterations then move to column a and repeat for next

That’s not a good format for data. It would be better to have the value “one” for each row, not in a merged cell. Can you change the input format?
no i only iterate in the given format
Hi @mofago6280 ,
You can read range to get data table, then use for each row in data table, if you change range, you can custom it when you read range or get them by index of row
regards,