Get Alert Notification when azure function returns code 200

I want to get notification when my azure function returns status 200. I have set up Alert and I am part of Action group that's supposed to receive alert.

Issue is, I am not getting alert. I checked Monitoring Graph for given signal aka HTTP 2XX, There also I see nothing.

I send this from code

            return func.HttpResponse(
                f"Total time took {time.time()-st}",

And My Azure portal looks like this azure portal screenshot

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