#checktable

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:

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