The last project I've created using Open Power Forms, shown some weaknesses of the current form implementation. There were some forms allowing a mass addition of many records in the following way: a table, in the columns the following fields: Name, Surname, PESEL number, etc. The numer of rows was 30, so the user is able to add 30 people to the database with one form. The adaptation of the map() method to my problem was not too hard; in fact it seemed that opfArrayContainer solved everything. But then the form renderer connected with Open Power Template went off.