Scratch

In my pong project, an object appears after playing for a little bit, and if hit it changes the background and makes it a 5-ball game instead of a 1-ball game and all the balls go faster.

I have the five balls set up with the scoring, bouncing etc. scripts, and then have this.

[blocks]
<when I receive[ switch ]
<show>
<set x to( 0 )
<set y to( 0 )
<point in direction( <pick random( 1 )to( 360 ) )
<forever>
<move( 30 )steps>
<end>
[/blocks]

It works, and after 10 seconds the game goes back.  However, the balls don't disappear.

I've tried all these:

[blocks]
<when I receive[ Switch Back ]
<hide>

and

<when I receive[ Switch Back ]
<set x to( 500 )
<set y to( 500 )
<hide>

and

<when I receive[ Switch Back ]
<set x to( 500 )
<set y to( 500 )
<hide>
<move( -30 )steps>

and

<when I receive[ Switch Back ]
<set x to( 500 )
<set y to( 500 )
<hide>
<forever>
<move( -30 )steps>
<end>

At first the last script was working to stop the scoring, but then the object is programmed to loop its appearance every minute for 5 seconds so you get another chance to go to the 5-ball game.  When you hit the object and go back to the 5-ball game, the balls start spazzing out because they have the programming for a forever 30 steps and a forever -30 steps.  If I didn't have the forever -30 steps the balls would keep scoring while invisible.