Failed to display data from a Listbox on the platform

Dear,

with through an array or list of objects I can see the data connected to the mysql in the studio bonita.

But when I go to the platform, it does not show me the combos list data, which can be?.

With form 6.x if it shows the data.
With form UI design does not show.

I leave part of the code:

Thanks, Marcelo

import groovy.json.JsonBuilder;

example : Java UtilList
List

milista1 = new ArrayList();

while(resultset.next()){

def jsnob = new JsonBuilder(); def lin1 = jsnob {

nombre_cliente(resultset.getString("nombre_cliente")) }

milista1.add(lin1);

} return milista1;

example: java.util.Collection

import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.HashMap; import java.util.List;

List result = new ArrayList(); while(resultset.next()) { String intValue = resultset.getString(3); result.add(String.valueOf(intValue)); } resultset.beforeFirst(); return result;