form1.Page.Contenedor.RadioBtn.rbTipo.caption = "nuevotexto";
form1.Page.Contenedor.RadioBtn.rbTipo.rawValue = "nuevotexto";
and more... but i don´t know if that is possible, could someone help me?
I think you are trying to set the value of a radio button group(???).
If so, then you first need to look in the Object > Binding palette to set the bound values.
Then you can set the value of the radio buttons by referencing the exclusion group and not an individual radio button.
If you have three radio buttons in an exclusion group 'RadioBtn' and they had bound values of '1', '2' and '3'. Then the following script would select the second button in the group:
form1.Page.Contenedor.RadioBtn.rawValue = "2";
If I have picked up your query wrong, then come back with some more info.
Here is an example that may help: https://acrobat.com/#d=75C9rDlCajENCX315JHm*Q
Hope that helps,