Accessing variables from inside anonymous class

I have an anonymous class and I want to access some variables of the outer class from the anonymous.The problem is that always when I try to access it, it has the same value as when it was initialized even that i am changing its value on an other anonymous class.

this is the trimmed code

public class WeaponCircle extends Entity {
    public static int TAG = gWorld.getNextTag();
    float power=99; // <<<--the variable
    public WeaponCircle(final gWorld world) {
        super(world);
        this.tag = TAG;

        setGroups(Scene.SLOWABLE);

        addMechanism(new IntervalMechanism(this,10) {
            @Override
            public void init() {
                super.init();
                    world.worldrenderer.setWorldShader("punchShockWave");
                    world.worldrenderer.getShader("punchShockWave").getShader().setUniformf("screenSize",  Tools.tempVec2.set(Gdx.graphics.getWidth(),Gdx.graphics.getHeight()));
                    power=4;
            }
            @Override
            public void die() {
                super.die();
                world.worldrenderer.setClearWorldShader();
            }
            @Override
            public void tick() {//this is called every frame
                if(power>0)power-=0.1f*Director.delta;
                Tools.con("debug0:"+power);    //<<--------------------debug0 ,prints correct value
            }
        });

        addMechanism(new MovementMechanism(this));

        addMechanism(new SpriteMechanism(this,"sprites/sprites.png",714,284,1,235,235,gWorld.RENDER_LAYER4));

        world.worldrenderer.addShader("punchShockWave", new Shader("shaders/default.ver","shaders/punch_shock_wave.frag",Shader.SCENE_SHADER));
        world.worldrenderer.getShader("punchShockWave").setListener(new ShaderParrametersListener(this) {
            @Override
            public void setParameters(Shader shader) {//called every frame
                WeaponCircle wc=(WeaponCircle)entity;//entity is the object that i passed in the constractor
                /*irrelevant code*/
                Tools.con("debug1:"+wc.power);  //<<--------------------debug1 ,prints always 99
                Tools.con("debug2:"+power);   //<<--------------------debug2 ,prints always 99
                /*irrelevant code*/
            }
        });
    }
}

ShaderParrametersListener (its a static class inside the Shader class)

public abstract static class ShaderParrametersListener{
    public Entity entity;
    abstract public void setParameters(Shader shader);
    public ShaderParrametersListener(){};
    public ShaderParrametersListener(Entity entity){this.entity=entity;}
}

My entity system is based on anonymus classes and I didnt had any problem so far ,If i use 1 more IntervlMechanism and print the power variable from there ,I will get the correct value.This happens only in the ShaderParrametersListener class.