How do I make gravity "equal"?

Hello I'm making a Flappy Bird clone just for the heck of it and I've got it down somewhat.

The problem is that I set the "bird" with platform behavior and I noticed that the higher the bird gets the floatier the jump is. I just want it so that the jump no matter the height rises and falls at the same rate.

I tried playing around with the gravity but it still happens.

I can't post url's atm but if anyone wants to look at the capx it is here

dropbox DOT com/s/4vwcjc5l7wdbc55/FlapMyBird DOT capx

Pardon the childish name of the game :)

Any help would be appreciated thank you.

dualshock, in order to get the movements just right, you'll have to keep adjusting and fine-tuning the values of "jump" strength and gravity. And, there is a platform behavior variable where you can adjust max fall speed if needed.