Plus 1 in instance for each Y value

You can't use "Add 1" because your event is triggered ~60 times per second.

Try this:

Set ABC to int((Ground.BBoxTop-player.Y)/20)

OMG it´s work

tks Man

Now how i invert it ? i mean when the player is go to down that instance return to 0.

this:

int((ground.BBoxBottom-P.Y)/20)

?

dop2000 tks man, but i have a new problem here :(

When the player passes through this blue obstacules with diferent Z elevation, the player Z elevation jump the number when you press up and aftter that prees button.

If you see in this video, the number jump 5 to 3 ... Is exist a way to fix it ?