G'Day,
I am well.  Thank you.
Modify your report in the usual way.  Then under the menu Reports, Data Grouping, Variables you can create a variable that increments for every detail line.
RECNO() may not be a good choice as some records may be printed, or not, and the order my not be what you think.
Create your own report line "counter" under the menu above ...
Value to store = 1
Initial Value = 0
Reset value based on report
Calculation type = Sum
... and reference that value in the "Print when".
Peter VK4IU  
You can help by posting images of 
any errors and including your 
Logic version.