How to Speed Power

How do I...?
#1

Hello!

I’m trying to figure out how to speed up a foreground if my player collides with a speed potential. And how to make it stop? Please help!!! For instance, in doodle jump, the character collides with an helicopter, spring, or a rocket and it speed up. doodle_jump_review|333x500

#2

You didn’t wait for the image to load before posting so your link is dead.

#3

It’s this image

doodle_jump_review
doodle_jump_review340×509 40.2 KB
to show the example. Anyways, I forgot to mention that I have my platform moving with a camera just like this
pic
pic1119×482 163 KB

I know its confusing, but what I did was create a layer called foreground and put the player and platform in it to create the camera movement I wanted.