Google App Script to set date when a column in a Gsheet is selected

setDateInGsheet.js

//get date of entry
function onEdit(e) {
  
  var ss = SpreadsheetApp.getActiveSheet();
  var r = ss.getActiveCell();
  //1.Change 'Sheet1' to be matching your sheet name
  if (r.getColumn() < 9 && ss.getName()=='Data_entry') { // 2. If Edit is done in any column before Column (I)  And sheet name is Sheet1 then:
var celladdress ='I'+ r.getRowIndex() 
    ss.getRange(celladdress).setValue(new Date()).setNumberFormat("MM/dd/yyyy");
  }
};

setDateOnUpdateColumn.js

//get date of entry
function onEdit(e) {
  
  var ss = SpreadsheetApp.getActiveSheet();
  var r = ss.getActiveCell();
  //1.Change 'Sheet1' to be matching your sheet name
  if (r.getColumn() == 37 && ss.getName()=='Payment Requests') { // 2. If Edit is done in column AI  And sheet name is Payment Requests then:
var celladdress ='AL'+ r.getRowIndex() 
    ss.getRange(celladdress).setValue(new Date()).setNumberFormat("MM/dd/yyyy");
  }
};