if($worksheet_name == 'event' && $start_row == 2 && $c == 1){
$validator = $this->workbook->addValidator();
// $validator->setList("a b c");
-// $validator->_fixedList = 1;
+ $validator->_fixedList = 1;
$validator->_type = 3;
$validator->_incell=true;
// $validator->setFormula1('a,b,c');