Call function after LoadLevelAsync

Hi guys, is possible to call a function located in a script placed in an object that is in the scene which I loaded using LoadLevelAsync before that I switch to the new scene?

    IEnumerator LoadLevel() {
        AsyncOperation async = Application.LoadLevelAsync("MyBigLevel");
        yield return async;
        //we have finished loading.
        //You can find the object you want with GameObject.Find and access its script to call a function.
        GameObject.FindGameObjectWithTag("newSceneObject").GetComponent<TheScript>().TheFunction();    
    }