Set a custom value to be given back in the feedback
    :param custom_name: name/key of the entry to be placed in the custom dict
    :param custom_val: content of the entry to be placed in the custom dict

def set_custom_value(custom_name, custom_val):
    """
    Set a custom value to be given back in the feedback
    :param custom_name: name/key of the entry to be placed in the custom dict
    :param custom_val: content of the entry to be placed in the custom dict
    """
    rdict = load_feedback()
    if not "custom" in rdict:
        rdict["custom"] = {}
    rdict["custom"][custom_name] = custom_val
    save_feedback(rdict)