Dinamically generates fields

[melnac]

Hi,
i am using AngularJS Formly to generate my GUI interface.
Now i have a situation in which when user changes the selected value for a dropdown field i need to show a number of inputbox fields in the form.
The number of inputbox fields are defined by the value of the dropdown.
So, for example, i started with the only dropdown.
When i choose 5 in the dropdown, i need to add 5 inputboxes.

How can i do that ?

Thanks in advance, Giuseppe.