APEX

Hello,
I have created a series of checkboxes on my page. When the page is submitted I loop through the apex_application.GF01 array to see which of check boxes has been set.

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FOR I in 1..APEX_APPLICATION.G_F01.COUNT LOOP
update mytable set status = 'CHECKED' where my_id = to_number(APEX_APPLICATION.G_F01(i));

END LOOP;
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I would like to be able to also update the table based on what is not on the list, so would like to do something like this;

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update mytable set status='UNCHECKED' where my_id not in ( select <INSERT ALL VALUES FROM ARRAY> from dual);
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Can somebody please guide me on how to select out of this array... do I just need to create another type and select out of that, or is there a simple way that I am unaware of.

Thanks
Ben