Srw.message. Afterpform issue

Question

Having trouble w/ srw.message.
I want to give the user the ability to:
1) leave all the parameters at default ALL
or
2)the ability to choose any group.
or
3)If they choose a class they must choose a group as well.
if they dont i want a message to pop up and say 'Must select corresponding group...'
or
4)same thing goes for subclass (the user must select both a group and class or a msg pops up 'Must select group and class')
Each Group number and group name is distinct
The same class number and class names can belong to different groups
Subclass numbers can belong to multiple subclass names
group#......class#....subclass#....subname
1111--------12---------1-----------hello
1123--------12---------1-----------hello
1111--------23---------2-----------goodbye
1143--------77---------3-----------night
2324--------77---------1-----------hello
Afterpform:
if :P_grp not like '%ALL%' then
     :p_where := :p_where || ' and g.group = ' || :p_grp;
end if;
if :P_class not like '%ALL%' then
     :p_where := :p_where || ' and c.class = ' || :p_class;
end if;
if :P_subc not like '%ALL%' then
     :p_where := :p_where || ' and s.subclass = ' || :p_subc;
end if;
Parameters LOVs:
Datatype: Character
Inital Value: ALL
:p_grp
select ' ALL', 'All Groups
from dual
union
select group,to_char(group)||' - '||group_name
from grp
order by 1
:p_class
select ' ALL', 'All Classes'
from dual
union
select class, to_char(class)||' - '||class_name
from class
order by 1
:p_subc
select ' ALL', 'All subclasses'
from dual
union
select subclass, to_char(subclass)||' - '||subclass_name
from sub
order by 1

Answer 1

Why is this called "Having trouble w/ srw.message"? I don't see it at all in your code.