Copy And Add Timestamp

SOLVED Simply I added dest.getRange(dest.getLastRow(),1).setValue(new Date()).setNumberFormat('yyyy-MM-dd HH:mm'); I'm here again because I would like to add a timestamp in column

Solution 1:

I solved with

dest.getRange(dest.getLastRow(),1).setValue(new Date()).setNumberFormat("yyyy-MM-dd HH:mm");