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 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.