Old code not working

this code works in older version but it crashes in v2020

// Recordset Selecting event
function Recordset_Selecting(&$filter) {
ew_AddFilter($filter, “Leccode = '”.Current().“'”);
}

error:
Fatal error: Uncaught Error: Call to undefined function PHPMaker2020\ECLASS\ew_AddFilter() in C:\xampp\htdocs\r\classes\assignmenttbl.php:1306 Stack trace: #0 C:\xampp\htdocs\r\classes\assignmenttbl.php(466): PHPMaker2020\ECLASS\assignmenttbl->Recordset_Selecting(‘’) #1 C:\xampp\htdocs\r\classes\assignmenttbl_list.php(965): PHPMaker2020\ECLASS\assignmenttbl->listRecordCount() #2 C:\xampp\htdocs\r\assignmenttbllist.php(23): PHPMaker2020\ECLASS\assignmenttbl_list->run() #3 {main} thrown in C:\xampp\htdocs\r\classes\assignmenttbl.php on line 1306

fixed , the issue is with the function ew_AddFilter() //AddFilter($filter, “Leccode = '”.CurrentUserName().“'”)
if shoulde be AddFilter() //AddFilter($filter, “Leccode = '”.CurrentUserName().“'”)