Stage Script Not Working

[THEkatinamicrowave]

Here's my mod directory (the data and scripts folders):

-mods
 |-myMod
   |-data
     |-stages
       |-withered.json
   |-scripts
     |-stages
       |-withered.hxc
   |-_polymod_meta.png
   |-_polymod_meta.json

In my stage, the shaders aren't working. Please help?

withered.hxc:

import funkin.graphics.shaders.AdjustColorShader;
import funkin.play.PlayState;
import funkin.play.stage.Stage;

class WitheredStage extends Stage
{
    var colorShader:AdjustColorShader = new AdjustColorShader();

    function new() {
        super('withered');
    }

    override function onCountdownStart(event:CountdownScriptEvent) {
        super.onCountdownStart(event);

        PlayState.instance.currentStage.getBoyfriend().shader = colorShader;
		PlayState.instance.currentStage.getGirlfriend().shader = colorShader;
		PlayState.instance.currentStage.getDad().shader = colorShader;
            
        colorShader.hue = -19;
        colorShader.saturation = -19;
        colorShader.contrast = 5;
        colorShader.brightness = -10;
    }
}

whats wrong

[Lasercar]

[THEkatinamicrowave]

thank you!! I forgot that the addCharacter method of Stage existed (I don't use vslice a lot :P)