function generateRegexDateRange(start, end)
{
  totalregex = "";
  var diff = parseInt(end.diff(start, 'days'));
  if(diff==0)
  {
    console.log('('+start.format("YYYY-MM-DD")+")");
    return '('+start.format("YYYY-MM-DD")+")";
  }
  var temp = start.clone();

  for (let count = 0; count <=diff; count++) {

    totalregex = totalregex+"("+temp.format("YYYY-MM-DD")+")|";
    temp.add(1, 'days');
 }

 var totalres = totalregex.substring(0, totalregex.length - 1);
return totalres;
}