How can I set the same key (spacebar) to move player to the top and down?

Hey guys, a beginner question - How can I set one button - the spacebar - to move an object (player) from down to top and oppsite way?

Pressing space bar - object is on top of screen

Pressing space bar again - objects is on the bottom of the screen.

Thank you so much!!

You can follow this to do that :

In case you want it move smoother :

Amazing! Thank you so much mate! :)