SuggestionBox in richfaces table

In a JSF + Richfaces application, I have a table with 2 columns, one of them is an edit box, in which I want to use an "autocomplete" functionality and for that I used the "rich: suggestionbox" tag that It was the only one that worked for my versions of JSF and Richfaces. So far so good, the problem is that it only works well for the first record in the table (first text box). Attached the code to see if you can help me:

<ui:component>      
    <a4j:form id="formCamposAsignarASap">
        <h:panelGroup>
            <fieldset> 
                <legend>#{msg.label_listado_campos_seleccionados}</legend>
                <rich:spacer/>
                <rich:dataTable id="tablaListadocampos" value="#{AsignarASapBB.listaCamposElementoSeleccionado}" 
                                var="campo" rows="30" rowKeyVar="row" 
                                ajaxKeys="#{AsignarASapBB.rowsToUpdateCampos}" 
                                reRender="ds" align="left" >
                        <rich:column sortable="true" sortBy="#{campo.nombre}" filterBy="#{campo.nombre}" filterEvent="onkeyup" style="text-align: left">
                            <f:facet name="header">
                                <h:outputText value="#{msg.label_nombre_campo}" />
                            </f:facet>
                            <h:outputText value="#{campo.nombre}" id="nomCampo" style="text-align: right" />
                        </rich:column>

                        <rich:column sortable="true" sortBy="#{campo.campoSapVO.pk.idCampoSap}" filterBy="#{campo.campoSapVO.pk.idCampoSap}" filterEvent="onkeyup" style="text-align: left">
                            <f:facet name="header">
                                <h:outputText value="#{msg.label_id_camposap}" />
                            </f:facet>
                             <a4j:region>
                             <h:inputText id="text" value="#{campo.campoSapVO.nombre}" >
                                <a4j:support ajaxSingle="true" event="onblur"/>
                             </h:inputText>

                                 <rich:suggestionbox for="text" 
                                            var="result" 
                                            suggestionAction="#{AsignarASapBB.autocomplete}" 
                                            fetchValue="#{result.value}"
                                            usingSuggestObjects="true"
                                            id="suggestion"
                                            selfRendered="true">
                                    <h:column>
                                        <h:outputText value="#{result.value}" />
                                    </h:column>
                                    <a4j:ajaxListener type="org.ajax4jsf.ajax.ForceRender"/>
                                </rich:suggestionbox>
                            </a4j:region>         

                        </rich:column>

                        <f:facet name="footer">
                            <rich:datascroller id="ds" renderIfSinglePage="false" />
                        </f:facet>
                    </rich:dataTable>

                    <rich:spacer width="150"/>

                    <a4j:region rendered="#{!(AsignarASapBB.listaCamposElementoSeleccionado eq null)}">
                    <dggc:boton id="botonAsignar" 
                                value="#{msg.label_nueva_ayuda_botonGuardar}"
                                styleLabel="bold" 
                                style="width:100px"
                                bean="#{AsignarASapBB}"
                                accion="botonAsignarASap"
                                status="waitStatus"
                                tabindex="12"
                                oncomplete="#{rich:component('panelCONF')}.show();"/>
                        </a4j:region>       

                    <rich:spacer width="10"/> 
                <center>

                </center>
            </fieldset>

        </h:panelGroup>

    </a4j:form>

</ui:component>

Thank you very much.

Greetings