Hi all and thanks for yours answer. I need to pass a list to JasperFillManager.fillReport. I've a class like this: public class DataBean { private String name; private String country; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getCountry() { return country; } public void setCountry(String country) { this.country = country; } public List<String> getdta(){ List<> lista=new arraList<String>(); lista.add("ss"); lista.add("rr"); } } Now I fill the report: JasperFillManager.fillReport( sourceFileName, parameters, beanColDataSource); But in the IReport designer i can choose only string and not list. any suggest is really appreciated. francesco Italy