Run-Able Platform Collison

hey guys need some help. Im trying to create a basic flat platform that the player can jump on and off. 

I have read about using event.collide and just don’t understand it. Is this the only way? 

 

So far I have set up a platform and added physics to its ‘static’ body. When i jump onto it all is fine however when I run off it doesn’t make me fall, instead I’m floating on an invisible platform still connected to the main platform.

 

What is wrong and how do I solve this ?