Error while creating editor in forms

Question

hi friends,
im trying to create an editor for job column .
i have items empno,ename,job,sal,hiredate,mgr.
im trying to create editor for job text item.
backend plsql program i ve written as
declare
edid EDITOR;
ival varchar2(100):='enter desg manager,analyst....';
oval varchar2(100);
res boolean ;
begin
     edid:=find_editor('job_editor'); /*job_editor is editor created in the object navigator */
     if id_null then
          message('job editor not from.......');
     else
          show_editor(edid,ival,0,100,oval,res);
               if res=true then
               :emp.JOB:=oval;
          end if;
          end;
after compiling this program unit im getting error
encountered the symbol ";" when expecting one of the following:
if
Not sure whats wrong with the program...help !

Answer 1

ID_NULL returns boolean value, true of false.
It checks for the value and if it exists then returns true.
if ID_Null returns true if value doesnt exist
If ID not_null returns true if value exist.
u need to declare id_null in the declaration.