What is the best approach to save Yes/No checkbox value into a SharePoint List. I have a Custom List call "HelpDesk", added a column type "Single line of text" - Call "Is this a new Issue"
Have a checkbox [ ]Yes and checkbox [ ]No
I been reading about Patch() function.
There are two ways to start the PowerApps design, start with data or from scratch. In your case, since you already have a SP list with necessary fields, but only mismatched datatype i.e. bool into string - you can do either way. But I would recommend to have boolean field in SP list, you will get a Flip switch (Toggle) in Canvas app based on datatype when you build from data.
If you are building from scratch or not, still you can manage to identify the Yes/No option (It can be a single checkbox or two radio buttons) & store the value in a context variable using SET() function & use that variable when you submit the form.