How to make Portal Form Submit go back to portal page?

Question

I'm using a form inside a Dynamic Page portlet so that I can have portal page parameters feed into the form. This works just fine.
However, when I submit a new record in my form, the page navigates to a page with just my Portal Form and not the Portal Page with the dynamic page that referenced the form. I need to make sure that when users click the insert/submit on my form that it goes back to the Portal Page that houses the Dynamic Page portlet.
I have logged a TAR but Oracle was unable to resolve it since they can't write code for a customer. Their suggestion was to put this in the pl/sql "Custom" event for the insert button:
DECLARE
l_url VARCHAR2(200);
begin
l_url:=
'TARGET=_blank>http://dallas.lacare.org:7777/portal/page?_pageid=154,107011&_dad=portal&_schema=PORTAL';
PORTAL.wwa_app_module.set_target(l_url,'CALL');
exception
WHEN OTHERS then
htp.p(SQLERRM);
end;
But that gives me an internal server error when I submit my form.
Any other ideas?
Thanks,
David

Answer 1

Looks like my problem was just the TARGET=_blank> stuff. I change the code to the following:
DECLARE
l_url VARCHAR2(200);
begin
l_url:=
'/portal/page?_pageid=154,107011&_dad=portal&_schema=PORTAL';
PORTAL.wwa_app_module.set_target(l_url,'CALL');
exception
WHEN OTHERS then
htp.p(SQLERRM);
end;
That works fine and instead of putting it in place of the INSERT button code I left that alone and put it in the "After form processing" pl/sql code. Now it works pretty well. The only thing left to fix is that it loses all my current Page Parameter values when forwarding the url like that.
David