Hello again, again with another little problem.
I want to do a search, according to the criteria of the Selector component. Then I have this model of hypertext:

The search result without any selection ("No selection") of countries are two:

But the result of the search, when the country ID is 1, is 0 persons or empty:

So, my problem is, why it does not filter when idPais = 1?. It appears that idPais is null why the result of the search of persons is 0 or empty.
Any suggestions.
Thank you,
Jose