Calling Vaadin JS function from cordova.InAppBrowser

we have defined the following JS function in Vaadin
JavaScript js = com.vaadin.ui.JavaScript.getCurrent();
        
js.addFunction('js_image_succeded', new JavaScriptFunction() {

            @Override
            public void call(final JsonArray arguments) {
    
                UI.getCurrent().access(new Runnable() {
                    
                    @Override
                    public void run() {
                        
                        succeeded(arguments);
                    }
                });

            }

        });

We are running an hybrid mobile app, In UIwebview within iOS, we are able to call these using stringByEvaluatingJavaScriptFromString.

Now porting into Android and using cordova here.
i used var ref = cordova.InAppBrowser.open(url, target, options);

Here, now am unable to call these javascript functions from cordova.

Tried the following
1. js_image_succeded(); //directly
2. ref.executeScript({ code: "js_image_succeded()"});

it says I/chromium: [INFO:CONSOLE(314)] "Uncaught ReferenceError: js_image_succeded is not defined"

kindly let me  know anyway we can call these JS functions please