Then it's not fair to broadcast that the alert doesn't work, is it? I'm chiding you a little only because with complete assurance I can tell you that the indicator works fine.
That said let's examine your set-up:
I see the problem. The Min Current Volume ratio is set at an impossibly high RATIO. Remember its a ratio of current volume over average volume. A large ratio could be 10 or even 100 - but 20M is excessive. I redid your strategy with a value of 25: