I can't use json data in the header.

[Gabriel Dehner]

Good! How are you?
I tell you that the data that I load in the json in the header file does not work for me.
Specifically, the h_nro and h_date fields do not appear.
I share the link https://playground.jsreport.net/w/gabriel.dehner/jiw5qvzq
I hope you can help me. From already thank you very much.
Greetings.
Gabriel Dehner.

[jan_blaha]

Please check this chapter the first
https://jsreport.net/learn/pdf-utils#input-data

Let me know if it is clear, otherwise, I will try to give you a hint.

[Gabriel Dehner]

Perfect! Many thanks.
It worked as follows:
Instead of using {{h_date}}, I used {{@ root.h_date}}.
It is right?

[jan_blaha]

yes, it is.
Thank you