How do I receive a responce of API?

I added AJAX:POST to URL in my eventsheet.

I want to change the event based on the results of an API response. For example, when it is not sent successfully or when I don't know how to confirm the results of a POST, what should I do?

You'll need to make sure you have a 'tag' in your Ajax Send. Then create a new event Ajax On Completed and use the same 'tag'. Your post reply will be in Ajax Last Data. To detect a failed post you add a new event Ajax On Error and again, use the same 'tag'. You can also use an Ajax Any Error event.