How do I script?

Hello there,

I’m making a Forge map and while that’s going pretty smooth I’m having trouble with scripting.
See I want to make a kill ball appear/disappear with a switch which will explode some fusion coils and make a lot of noise so footsteps and such wouldn’t be heard that well.
Now the problem is that I can’t make it appear/disappear.

Here’s the settings as of now:

2 switches (with toggle switches phased into them) with the script settings
-Spawn Channel: -1
-Can Despawn: False
-Power Channel: -1
-Broadcast Chanel: 1
-Timer/user data: 0

1 Kill ball with the script settings
-Spawn Channel: 1
-Can despawn: False
-Timer/User data: 0

When I put down a gate to see of I messed something up the gate would activate but the kill ball just wouldn’t appear/disappear. What did I do wrong???

Thanks in advance,
Unease P34nut