How to generate a form based on PL/SQL-procedures instead of tables?

Hi all,
I'm trying to generate a form based on a package, which has procedures for insert/update/delete/select. In Forms, this is no problem. It is unclear to me how to do this in Oracle Designer (10g). Online Help of Designer doesn't clear things up a lot, it seems I have to generate a table API and a module component API. But when I do this, these are generated as file and no definitions are created in Designer. So what do I base my block on?
Can somebody assist me in this?
Kind regards,
Ronald

Hi:
Thank you for reply to my question.
I have tried your codes and apply them the following the form. However, I always got the following error:
Error: (WWV-00000)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
My codes is:
declare
request_no number;
blk varchar2(30) := 'DEFAULT';
l_url varchar2(4000);
begin
request_no := p_session.get_value_as_NuMBER(
p_block_name => blk,
p_attribute_name => 'A_WORK_REQUEST_ID');
l_url := 'portal30.wwa_app_module.link?p_arg_names=_moduleid&p_arg_values=11880470335&p_arg_names=_sessionid&p_arg_values=&p_arg_names=work_request_id&p_arg_values='||request_no;
portal30.wwa_app_module.set_target(l_url,'call');
end;
then,
I created another form which has two fields and the dattype of pk is varchar2 and change manually put the pk's p_arg_value into the url.
e.g.
l_url:='PORTAL30.wwa_app_module.link?p_arg_names=_moduleid&p_arg_values=9029417810&p_arg_names=WORK_AREA_CD&p_arg_values=APP';
portal30.wwa_app_module.set_target(l_url,'call');
However, I still get the error message as below:
Error: (WWV-00000)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
Your help would be highly appreciated.
Wei Ye

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