MV - Show sprite over character on map

SceneManager._scene._spriteset._characterSprites[eventID - 1]
//(adressed via event id)
SceneManager._scene._spriteset._characterSprites
//(adress all)

    // load char img to Character
var _ImgLoad_Character_setCharacterBitmap = Sprite_Character.prototype.setCharacterBitmap;
    Sprite_Character.prototype.setCharacterBitmap = function() {
          _ImgLoad_Character_setCharacterBitmap.call(this);
          this._imgLoadBitmap = ImageManager.loadCharacter('srpg_set');
    };
        // create Overlay
    Sprite_Character.prototype.createImgLoad = function() {
        if (!this._imgLoad1 ) {
             this._imgLoad1 = new Sprite();
             this._imgLoad1.anchor.x = 0.5;
             this._imgLoad1.anchor.y = 1;
             this.addChild(this._imgLoad1);
        }
    };
        // update Overlay
    var _ImgLoad_updateCharacterFrame = Sprite_Character.prototype.updateCharacterFrame;
    Sprite_Character.prototype.updateCharacterFrame = function() {
        _ImgLoad_updateCharacterFrame.call(this);
                var pw = this.patternWidth();
                var ph = this.patternHeight();
                var sx = (this.characterPatternX()) * pw;
                var sy = (this.characterPatternY()) * ph;
                if (!this._character.eventId) {
                    this.createImgLoad();
                    this._imgLoad1.bitmap = this._imgLoadBitmap;
                    this._imgLoad1.setFrame(sx, sy, pw, ph);
                    this._imgLoad1.visible = true;
                }
    };