Newbie questions, help needed, please

Question

I am pretty new to Oracle Application Express. I have two problems when I try to create Page with type of "Report and Form". I hope you guys could help me out:
(1) When I create Pages with the type of "Report and Form", the first column, primary key does not show up in the report page. Why?
(2) When the table has two primary keys, I have problem when I click the button to go to form page from report page to update the record. It always show error said "Fetch returns more than one rows". How can I tell the application that I have two primary keys?
Thanks,
Lee

Answer 1

Put in "HTML Expression [Insert column value]" part of field which will be a link:
a href = f?p=&APP_ID.:&APP_PAGE_ID.:&APP_SESSION.::NO::PX_PK1,PX_PK2:'+'#PK1#'+','+'#PK2#')">Edit< /aput in previous sentence "<" in front and ">" on the end and remove blank before "/a" - otherwise you'll not see the content but real link!!!!!
where :
<li>"&APP_ID." is the page in which you want to open and start edit</li>
<li>"PX_PK1,PX_PK2" are items on that page (probably hidden) tha will represent primary key</li>
<li>"#PK1#" and "#PK2#" are primary key values on current page (from table grid represent with query "SELECT PK1,PK2,...from MyTable"</li>
P.S.
I read somewhere that life with Appex should be much easy when people should use PK base on one coulmn (sequence).
To ensure PK on those fields create UNIQUE index on those two fields and in table define NOT NULL on those two columns.
When you get expireienced you'll know the benefit of this advise