Google Sheet Last Edit Cell Focus

Google Sheet Last Cell Edit Focus
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function setTrigger() {
  var ss = SpreadsheetApp.getActive();
  ScriptApp.newTrigger("myFunction").forSpreadsheet(ss).onEdit().create();
}

function myFunction() {
  var sheet = SpreadsheetApp.getActiveSheet();
  var sName = sheet.getName();
  var currentCell = sheet.getActiveCell().getA1Notation();
  UserProperties.setProperty("mySheetName", sName);
  UserProperties.setProperty("myCell", currentCell);
}

function onOpen() {
  var lastModifiedSheet = UserProperties.getProperty("mySheetName");
  var lastModifiedCell  = UserProperties.getProperty("myCell");
  SpreadsheetApp.getActiveSpreadsheet().getSheetByName(lastModifiedSheet).getRange(lastModifiedCell).activate();
}