Another Checkbox Mystery

I can see plenty of requests for help in here with the checkbox. I thought “that will never happen to me”.
How wrong I was. Here I am with my checkbox issue…

My check box returns nothing when checked. An empty string is sent to the database. Why?

Extra credit for answer to this:
My expectation is Wappler should send a ‘1’ or a ‘0’. What does it actually send (if it is working)?

Thank you for helping yet another newbie with a simple checkbox issue.