DECLARE
NumberCard VARCHAR(20);
Session_Time VARCHAR(20);
begin
        
        SELECT CARD_NUMBER_HEX
        INTO NumberCard
        FROM INFO_SESSION
       WHERE ID = (SELECT MAX (ID) FROM INFO_SESSION);
       HTP.PRN(NumberCard);
                 exception
  when no_data_found then
          NumberCard := 12;
          HTP.PRN(NumberCard);

end;

function Check_Session(){
alert('Процесс запущен');  
         var get = new htmldb_Get(null,154,'APPLICATION_PROCESS=CHECK_SESSION',0);
        
get.add('P2_NEW','NumberCard');

var gReturn = get.get();
document.getElementById('P2_NEW').value = gReturn;

if (gReturn != '') {
alert(gReturn);
}

        alert('Процесс завершен');
}

htmldb_Get(null,154,'APPLICATION_PROCESS=CHECK_SESSION',0);