I have an error when I map a form variable (JSON) to a table(HTML table tag). The form variable is a collection of complex data.

Hello to the hole Bonita community, I’m new in Bonita 7.2, any help will be appreciated.
I hope you a nice day.
This is the problem:

I created a custom Widget with an HTML table, I use a parameter, a Collection of Complex Data that I pass to the widget and I try to show it in the wdget But I always get an error.
I'm watching the vaue of the collection in a text field and it is a correct JSON.
This is the tempalte code:

Table - sort and filter


I am new to the bonitasoft tool. And I am aware that in the subscription version this table widget is included that can be sorted and filtered. However, I am not sure that I will be purchasing the subscription version.

How to display data on a table in form

Hi everybody.
I'm using Bonita7.1.2 and I'm managing the web service tutorial in bonita 6.5 documentation

Everything seems ok, I can call the web service and retreiving data, but I can't display those data in a table.
This is what I get in page. Where I'm wrong? Can anyone help me?