[RESOLVIDO]JSF + IReport ERRo:Error retrieving field value from bean :

Error retrieving field value from bean :

public class Relatorios {

	// Campos de parametro do report
	private Integer p_codpedido;
	private String p_ordenador;
	private String p_gestor;
	private String p_agente;
	

	public void imprimirRelatorioPam(ActionEvent event,IDAO dao) throws Exception {
		
		List<Pedido> list = dao.listarTudo(Pedido.class);	
		
		// parametros
		Map parametros = new HashMap();		
		parametros.put("P_CODPEDIDO", new Integer(10));
		parametros.put("P_ORDENADOR", new String("Eurico Jorge de Lima Cel Int"));
		parametros.put("P_GESTOR", new String("Fernando Cardoso Vidal Júnior - Maj Int"));
		parametros.put("P_AGENTE", new String("Jorge Luiz R.Alvarenga T.Cel Int"));	

		try {
			
			JRBeanCollectionDataSource ds = new JRBeanCollectionDataSource(list);
			
			JasperPrint impressao = JasperFillManager.fillReport(getPath() + "/pam.jasper",parametros,ds);

			if (impressao != null) {
				byte[] bytes = JasperExportManager.exportReportToPdf(impressao);
				byte[] arquivo = bytes;

				download(arquivo,"pamTeste");
			}

		} catch (Exception e) {
			System.out.println(e.getMessage());
		}

	}
	
	//Devolve o path padrao dos reports
	public static String getPath() {   
		ServletContext servletContext = (ServletContext) getFacesContext()
		.getExternalContext().getContext();
	    return servletContext.getRealPath("WEB-INF/report/") + "/";   
	}
	
	//Devolve o response para o download
	public static HttpServletResponse getServletResponse() {   
	    return (HttpServletResponse)getFacesContext().getExternalContext().getResponse();   
	}   
	  
	//obtem o faces context da aplicacao
	public static FacesContext getFacesContext() {   
	    return FacesContext.getCurrentInstance();   
	} 
	
	//metodo que executa o download
	public static void download(byte[] arquivo, String nome) throws Exception {   
	    HttpServletResponse response = getServletResponse();   
	    response.setContentType("application/pdf");   
	    response.setContentLength(arquivo.length);   
	    response.addHeader("Content-Disposition", "attachment; filename=" + "\"" + nome + "\"");   
	    ServletOutputStream outputStream = response.getOutputStream();   
	    outputStream.write(arquivo, 0, arquivo.length);   
	    outputStream.flush();   
	    outputStream.close();   
	    getFacesContext().responseComplete();           
	} 

}

public class RelatorioPamMB {

	private Relatorios pam = new Relatorios();

	// Dependencia injetada
	private IDAO dao;

	public Relatorios getPam() {
		return pam;
	}

	public IDAO getDao() {
		return dao;
	}

	public void setDao(IDAO dao) {
		this.dao = dao;
	}

	public void imprimir(ActionEvent event) {
		try {
			this.pam.imprimirRelatorioPam(event, getDao());
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

}