Use double tap in touch?

I try doing something very simple like this:

On double tap gesture --> Add 1 to Counter

And it appears that every time I tap, the counter will increase. Did I do something wrong? How can I get the double tap to work? Thanks.

I just tested On double-tap and On double-tap object. They both work fine on my end.

You got a capx to share?

Strange indeed. When I use my Mac and do double tap using the track pad, it works fine. But when I use my laptop with a touch screen to test, it is not working properly. Did you test on a touch screen?

Did you test on a touch screen?

Yes. Using Remote Preview, it works on my android tablet and phone. I don't have a laptop (with touchscreen) to test on.