Update 4.2 -> 5.0 = TypeError: me.getConfigurator(...).merge is not a function

Hi,

I like to create a window on button click. Since the update I get the following error

TypeError: me.getConfigurator(...).merge is not a function

Code:

initConfig: function(instanceConfig) {
        var me = this,
            config = {};
        me.processWinVerfolgung(config);
        if (instanceConfig) {
            me.getConfigurator().merge(me, config, instanceConfig);
        }
        return me.callParent([config]);
    }

any ideas? thank you so much

regards

Update 4.2 -> 5.0 = TypeError: me.getConfigurator(...).merge is not a function