No data load my outputText of Primefaces?

No data load my outputText of Primefaces?

I have a question I have a DataTable, where I have a button in a column
edit, capture the Id of the record, and make a list that record to load
the data in the object system, peroHola, I have a question I have a
DataTable, where I have a button in a column edit, capture the Id of the
record, and make a list that record to load the data in the object system,
but my text box value is charging.
<p:dataTable id="dataTable" var="sis" value="#{listSistMB.system}"
paginator="true" rows="10" rowIndexVar="rowIndex"
selection="#{listSistMB.system}"
paginatorTemplate="{CurrentPageReport} {FirstPageLink}
{PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}
{RowsPerPageDropdown}"
rowsPerPageTemplate="5,10,15">
<p:column>
<f:facet name="header">
<h:outputText value="Status" />
</f:facet>
<p:selectBooleanButton value="#{sis.stStatus}" onLabel="A"
offLabel="I" />
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="Edit" />
</f:facet>
<p:commandButton id="selectEdit" action="#{listSistMB.editSystem}"
icon="ui-icon-search" title="Editar System">
<f:param name="codCode" value="#{sis.cdCode}"/>
</p:commandButton>
</p:column>
</p:dataTable>
In the controller I headed this way the system object.
@Component("listSistMB")
@Scope("view")
public class MantenanceSystemController implements Serializable{
private System system = new System();
public String editSystem(){
try {
String cdCode =
(String)FacesContext.getCurrentInstance().getExternalContext().
getRequestParameterMap().get("codCode");
system = confSistemaService.buscarPorId(Long.valueOf(cdCode));
} catch (Exception e) {
e.printStackTrace();
}
return "register-system";
}
It's not charging me the value of the text box.
<p:inputText value="#{listSistMB.system.nbNomCorto}" />