Custom pokeball that activates a switch or sets a variable?

[Telemetius]

The title is self explanatory, what I've been trying to do is setting a switch on (or a variable to 1) when a custom pokeball is thrown mid-battle:

BallHandlers::ModifyCatchRate.add(:DEBUGBALL,proc{|ball,catchRate,battle,battler|
$game_switches[112] = true
next [catchRate,255].min
})

But it's not working. Can someone suggest me where i should put the:
" $game_switches[112] = true "
part, to make sure that it will be 100% set true?

EDIT: I made sure that the new ball is recognized by the game so that's not the problem.
EDIT2: Missing a C

 

[Maruno]

What is the switch supposed to do?

 

[Telemetius]

What is the switch supposed to do?

Simply put, the switch is supposed to show a message a moment before the battle ends:

pbDisplayPaused(_INTL("bla bla bla, debugball thrown, nice work {1}.",$Trainer.name))