Set Item arraylist to firebase analytics event in ADD_TO_CART not working (Android)

My code for add_to_cart in firebase event is as follows:

public void addToCartEvent(ArrayList<ServiceModel>items, String currency, Long value){
    ArrayList<Bundle> products = new ArrayList<>();
    for(int i=0;i<items.size();i++){
        Bundle product1 = new Bundle();
        product1.putString( FirebaseAnalytics.Param.ITEM_ID, String.valueOf(items.get(i).getId())); // ITEM_ID or ITEM_NAME is required
        product1.putString( FirebaseAnalytics.Param.ITEM_NAME, items.get(i).getName());
        product1.putString( FirebaseAnalytics.Param.ITEM_CATEGORY, "");
        product1.putDouble( FirebaseAnalytics.Param.PRICE, items.get(i).getRate() );
        product1.putString( FirebaseAnalytics.Param.CURRENCY, "INR" ); // Item-level currency unused today
        product1.putLong( FirebaseAnalytics.Param.QUANTITY, 1);
        products.add(product1);
    }
    Bundle params = new Bundle();
    String username = appPreferences.getString(AppPreferences.Keys.NAME);
    String email = appPreferences.getString(AppPreferences.Keys.EMAIL);
    String mobileNumber = appPreferences.getString(AppPreferences.Keys.MOBILE);
    params.putString("user_name", username);
    params.putString("email", email);
    params.putString("mobile_number", mobileNumber);
    params.putString(FirebaseAnalytics.Param.CURRENCY, currency);
    params.putDouble(FirebaseAnalytics.Param.VALUE, value);
    params.putParcelableArrayList(FirebaseAnalytics.Param.ITEMS,
            products);
    mFirebaseAnalytics.logEvent(FirebaseAnalytics.Event.ADD_TO_CART, params);

}

The problem is that i am not getting the list of items in firebase console. Please Help!