BTW - is there a way to make the code act the first or second sheet
without the code referencing specific names for the sheets a specific
name?

We called the first sheet 'Before' and the second sheet "After".

This is fine of course until the wb we run it on has sheets with
different names. If the code could act on the first and second sheets
whatever their name is , this would make it more universal and avoid
errors when the sheet names don't match the ones given in the code