How to create a value-responsive checkbox in Oracle Apex?

I have a page with a few fields, loaded from a DB table, such as:

Name:   John Smith
ID:     jsa44
State:  MA

I want to display a checkbox that is checked when activeuser is yes and unchecked when activeuser is no. Also, I want to change the value of activeuser whenever the checkbox check status changes.

How would I do this?


Instead of having ActiveUser as a hidden item, make it a Checkbox item with these attributes:

(Note Display Extra Values set to No).

Then add a computation like this:

(My item was called P1_X). This computation handles the fact that the unchecked value of a checkbox is always NULL, converting that to 'no'.

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