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                function findChanges() {

  var SHEET = SpreadsheetApp.getActive().getSheetByName("Sheet1");

  // find the column index of the DateClicked and CLICKED columns

  var IX_DATA = SHEET.getRange(1,1,1,SHEET.getLastColumn()).getValues();
  var DATE_COL = (IX_DATA[0].indexOf('DateClicked') + 1);
  var CLICKED_COL = (IX_DATA[0].indexOf('CLICKED') + 1);

  // set the current date as a constant

  var CURRENT_DATE = new Date();
  // build the array of data from the spreadsheet. We start on row 2 at the date col, go down to the last row and over as far as the clicked column

  var CLICK_DATA = SHEET.getRange(2,DATE_COL,SHEET.getLastRow(),(CLICKED_COL - DATE_COL + 1)).getValues();

 for(var i=0; i<CLICK_DATA.length; i++)

    // check to see if this row now has an X in the clicked column but no date in the DateClicked field, indicating it's a new click

    if ((CLICK_DATA[i][0] == "") && (CLICK_DATA[i][2] == "X")) {