getting my Character to move

So I was trying to get my character to move from left to right which I did but when I did. when I tested the character it just kept on moving it didn’t stop so I’m not sure on how to fix this. I went over the tutorial Ken Posted and followed the directions but it didn’t work https://lowlab.io/html5/bin/1415469 so here’s the link for the game. Go into the behaviors section of the character and test it. I really hope I can get some help on this.
Thnk you Justin Skelding

Click the character and click “physics” at the bottom right.
Then click the Movable checkbox.