Data Binding in rich datatable inside a rich modal panel

[qaelbdj]

I have a modal panel with a datatable inside it. Datatable "dtbParameters" is binded to the list extLinkBean.parametersBuffer.

This modal is shown when I press cmdBtn command Button.

When I click Accept in the modal, jsFunction doSql is executed (and extLinkBean.ConvertToConditionAction server procedure) and other modal is shown.

Te problema is that the #{parameter.value}" field is still null in the event  extLinkBean.ConvertToConditionAction, it does not catch the input text written by the user in the datatable.

This is a cleaned version of the code.

Here is how I call my modal panel

                <a4j:commandButton id="cmdBtn" value="Test" action="#{extLinkBean.ReadParemeterList}"  reRender="dtbParameters"

                                oncomplete="Richfaces.showModalPanel('modal_InputDBData')"  ajaxSingle="#{true}"/>

                <a4j:jsFunction name="doSql" reRender="dtbPars" 

                action="#{extLinkBean.ConvertToConditionAction}"                   

                oncomplete="#{rich:component('modal_DBData')}.show()" />

<rich:modalPanel id="modal_InputDBData">

            <a4j:region>

                <h:form>

                    <h:panelGroup >

                        <div style="display:block; margin-left: auto; margin-right:auto; text-align:center; margin-top: 20px;">

                        <rich:dataTable id="dtbParameters" columns="2" value="#{extLinkBean.parametersBuffer}" var="parameter">           

                                    <rich:column><h:outputText>#{parameter.fieldname}</h:outputText></rich:column>

                                    <rich:column> <h:inputText value="#{parameter.value}"/></rich:column>

                         </rich:dataTable>                               

                            <input type="button" value="Accept"

                                    onclick="#{rich:component('modal_InputDBData')}.hide();doSql();return false;" />                                           

                        </div>                       

                    </h:panelGroup>

                </h:form>

            </a4j:region>

        </rich:modalPanel>

<rich:modalPanel id="modal_InputDBData">

</rich:modalPanel>

Please help!

[qaelbdj]

I want to update extLinkBean.parametersBuffer collection items, field "value", through text input in the DataTable.

That field in the collection Items is null and never changes.

[qaelbdj]

I solver this issue changing

<rich:modalPanel id="modal_InputDBData">

            <a4j:region><h:form>.....</h:form></a4j:region></rich:modalPanel>

for

<rich:modalPanel id="modal_InputDBData">

            <h:form><a4j:region>....</a4j:region></h:form></rich:modalPanel>

The h:form must be outside of the a4j:region