controlling switches by scripts

[McP]

Hello!
I use Aleworks Options Menu since yesterday and set up my own option.
Basically, i set up an option in the "graphics tab", that should turn on or off some eye candy in my game.
I want the script to set a switch to true when the option is activated.
The party of the script that can do this is this i think:

    when 17 # My option
    return nil if type != 0
    if @bloom_effekt == true
      @bloom_effekt = false
    else
      @bloom_effekt = true
    end

i tried to add lines to set game_switches[200] = true (or false)
but that gives me a nil error.

I also thoungt about adding some lines to an update class since the game has to know about the changes in the option menu i did it like this:

def update
if @bloom_effekt == true
$game_switches[200] = true
else $game_switches[200] = false
end

but thats not workin either.
Then i tried it with a simple conditional branch checkin for

if bloom_effekt

but that simply does nothin..even with an else branch..

Can somebody help me, or explain what i am doing wrong?
I have absolutely no knowledge of ruby and maybe i am getting some points wrong about how ruby works.
I just try around using ruby hoping i'll get no errors an this usually works^^
so please, give me some hints!

 

[SephirothSpawn]

If you are just wanting to toggle a variable, you can use this:

your_variable = !your_variable

So if you are just toggling a game switch, you can use

$game_switches[switch_id] = !$game_switches[switch_id]

Thats it.

 

[McP]

that gives me an undefinded method error...undefined method for `[]' nil:class

 

[Sheol]

If you get that error is because you're using it before define $game_switches.
That is defined in Scene_Title, are you trying to use it before the title?

 

[McP]

I am using it above main and below the other scripts like all custom scripts.
Can i define $game_switches again?