Scrolling messes up collision detection

programming flash
1

Hello guys, I am making a game and i’m having a hard time scrolling the world without my collisions being muddled up.

        container = new Sprite();
        addChild(container);

        container.addChild(ground);
         container.addChild(character);

        container.x = -character.x + stage.stageWidth / 2;

After implementing the code I ran the game to find this.

I add ground to the container. Inside ground is another movieclip with an instance name (bottom), and i test collision between player’s feet and ground.bottom

Can someone help me please.

P.s sorry for the second image, I don’t know how to remove, thank you);