Oracle Forms

I am having a problem with a 10g form with When-Button-Pressed trigger code containing a OPEN_FORM(form_name, NO_ACTIVATE, SESSION) statement. It is supposed to open the child form, then transfer control back to the parent form to perform additional processing, then transfer control to the child form using GO_FORM.

The code stops processing following successful completion of the OPEN_FORM statement, leaving the parent form with focus.

Actually,I was trying to open a form say FormB from FormA using open_form('FORMA',NO_ACTIVATE, SESSION). Then from a trigger in FormA I want to navigate to FormB using go_form('FORMB').But it is not doing navigation.

Below is the code I have written in When-Button-Pressed trigger

declare
form_id FORMMODULE;

begin

open_form('TestForm2',no_activate,no_SESSION,SHARE_LIBRARY_DATA);

form_id:=FIND_FORM('TESTFORM2');

go_form(form_id);
go_block('EMPLOYEE_S1'); ---EMPLOYEE_S1 is a block in 'TESTFORM2'
go_item('EMPID');
COPY(1243, 'EMPID');
do_key('COMMIT_FORM');

end;

If anyone has insight as to what causes this, I'd greatly appreciate it.