Need To Adjust Character Size During Gameplay

Hi!

I am looking to do a seemingly simple but also intricate thing with my character in buildbox. I'd like to make it so that upon sliding the user’s finger up or down, the character's size changes to be bigger or smaller (which would then interact with objects).
In other words, by moving the thumb up and down it changes the character's size, which then interacts with objects.
How could I achieve this?

Thank you so much!

 

"moving the thumb up and down it changes the character's size"

That's not possible to achieve with BuildBox.

 

Ah ok, thank you. Do you know how it’s possible to have controls similar to the game “Helix Jump”:
Where the character cannot move up or down but only left and right?

 

This Helix Jump game would be able to make very easy with BuildBox 3, there's actually a preset for that there still, BuildBox 3D has a lot of bugs, I cannot get it to work properly for most of what I tried. It's still beta.

 

Thank you!! Do you know how to access the same character controls as Helix Jump but in 2D?

 

FYI for anyone interested, to limit the controls to only the x-axis, just set max-speed in the y-axis (the right one) to 0.