Mysql Trigger Error

[Stopka Miroslav]

Can you help me? Im trying create trigger but it signal error. Thanks

create trigger hinewplayertableTrig before insert on hinewplayertable
for each row
begin
declare tableT integer;
declare seatS integer;
select idTable, idSeat into tableT, seatS from hinewplayertable
where idPlace = (select max( idPlace )from hinewplayertable ) ;
if(seatS == 10) then
new.idSeat = 1;
new.idTable = table + 1;
else
new.idSeat = seat + 1;
new.idTable = table;
end if;
new.chips = 1500;
new.rank = 0;
end;