Add Checkbox with onEdit, as new row added to Spreadsheet - Apps Script - google-apps-script

Question

I have the below script that adds a timestamp when a new row of data is added.
function onEdit(e) {
var s = SpreadsheetApp.getActiveSheet();
if(s.getName() !== 'Sheet7' || e.range.columnStart != 1 || e.range.rowStart < 1) return;
e.range.offset(0, 1).setValue(e.value ? new Date() : "");
}
I tried the below for adding the checkbox, doesnt work.
function AddCheckBox() {
var cell = SpreadsheetApp.getActive().getDataRange('A1:B');
var criteria = SpreadsheetApp.DataValidationCriteria.CHECKBOX;
var rule = SpreadsheetApp.newDataValidation()
.requireCheckbox()
.build();
cell.setDataValidation(rule);
}
I would like it to also add a checkbox as well to the column next to where the timestamp appears.
Thanks in Advance

Answer 1

I just worked it out if anyones interested
function onEdit(e) {
var s = SpreadsheetApp.getActiveSheet();
if(s.getName() !== 'TEST' || e.range.columnStart != 1 || e.range.rowStart < 1)
return;
e.range.offset(0, 1).setValue(e.value ? new Date() : "");
var spreadsheet = SpreadsheetApp.getActive();
var cell = SpreadsheetApp.getActive().getRange('C1');
var criteria = SpreadsheetApp.DataValidationCriteria.CHECKBOX;
var rule = SpreadsheetApp.newDataValidation()
.requireCheckbox()
.build();
cell.setDataValidation(rule);
var spreadsheet = SpreadsheetApp.getActive();
spreadsheet.getRange('C1').activate();
spreadsheet.getCurrentCell()
.getNextDataCell(SpreadsheetApp.Direction.DOWN).activate();
spreadsheet.getActiveRange()
.autoFillToNeighbor(SpreadsheetApp.AutoFillSeries.DEFAULT_SERIES);
spreadsheet.getRange('A1').activate();
}