Hi ,
    I am tring to upload a file than File Uploading successfully but ModelPanel not hidding .

    Code is there

<a:outputPanel id="commonPanel">
               <rich:modalPanel id="commonMp" styleClass="modalPanel" top="10"
                    keepVisualState="#{manageMasterMaintenanceJob.showOverlay}"
                    autosized="true" minWidth="600" minHeight="100"
                    style="background-image: url('../img/overlayBg.png');background-repeat: repeat;background-color: transparent;"
                    shadowDepth="#{messages.valShadowDepth}"
                    headerClass="modalPanel-header" controlsClass="modalPanel-controls">
                    <f:facet name="header">
                         <h:outputText value="#{manageMasterMaintenanceJob.modelPanelHead}" />
                    </f:facet>
                    <f:facet name="controls">
                         <a:form ajaxSubmit="true" id="closeLayer">
                              <a:commandLink action="#{manageMasterMaintenanceJob.closeLayer}"
                                   oncomplete="Richfaces.hideModalPanel('commonMp')">
                                   <h:graphicImage value="/img/closeButton.png" alt="X" border="0" />
                              </a:commandLink>
                         </a:form>
                    </f:facet>

<h:panelGrid styleClass="modalPanel-panelGrid">
                         <h:message styleClass="message" for="commonPanel"
                              style="color:red;" />
                         <h:form enctype="multipart/form-data">


<h:panelGrid columns="1" columnClasses="name"
                                   rendered="#{manageMasterMaintenanceJob.formToLoad=='uploadHowToFileForm'}"
                                   styleClass="panelGrid">
                                   <s:div styleClass="modalPanel-panelGrid-container-div">

                                        <h:panelGrid styleClass="modalPanel-panelGrid">

                                             <h:panelGrid columns="1" border="0"
                                                  columnClasses="formLabel,formValue" rowClasses="formLabel">
                                                  <s:decorate id="UploadedFileName"
                                                       rendered="#{manageMasterMaintenanceJob.uploadedFile!= null}"
                                                       template="../layout/edit.xhtml">
                                                       <ui:define name="label">#{messages.lblUploadedHowToFile}: </ui:define>
                                                       <h:outputText
                                                            value="#{manageMasterMaintenanceJob.uploadedFile}"
                                                            rendered="#{manageMasterMaintenanceJob.uploadedFile!= null}" />
                                                  </s:decorate>

                                                  <s:decorate id="UploadFileName"
                                                       template="../layout/edit.xhtml">
                                                       <ui:define name="label">#{messages.lblUploadHowToFile}</ui:define>
                                                       <s:fileUpload id="howtofile"
                                                            data="#{manageMasterMaintenanceJob.fileData}"
                                                            fileName="#{manageMasterMaintenanceJob.fileName}"
                                                            style="height:20px;" required="true"
                                                            requiredMessage="#{messages['message.required.maintenanceJobType.uploadHowToFile']}" />
                                                  </s:decorate>

                                                  <h:commandButton value="#{messages.btnUpload}"
                                                       action="#{manageMasterMaintenanceJob.persistHowToFile}" >
                                                       <a:support event="onclick" reRender="commonPanel" data="#{facesContext.maximumSeverity.ordinal == 0}"
                                                       oncomplete="if(data == true) Richfaces.hideModalPanel('commonMp');" 
                                                       
                                                        action="#{manageMasterMaintenanceJob.closeLayer}"
                                                             />
                                                  </h:commandButton>
                                             </h:panelGrid>
                                        </h:panelGrid>
                                   </s:div>
                              </h:panelGrid>

</h:form>
                    </h:panelGrid>
               </rich:modalPanel>

          </a:outputPanel>

JAVA Code

@Begin(join = true)
     public void persistHowToFile() {
          log.info("Entering persistHowToFile() method");
          log.info("File Name: " + fileName);
          log.info("master job id: " + mJobId);
          this.masterJob = entityManager.find(MasterJob.class, mJobId);
          try {
               if (fileName.equals("") || fileData.length == 0) {
                    //facesMessages.addFromResourceBundle("message.masterJobFile.select.file");
                    
                    log.info("enter to check null file name");
               //     facesMessages.addToControlFromResourceBundle("commonPanel", "message.required.masterMaintenanceJob.uploadHowToFile");
                    facesMessages.addFromResourceBundle(javax.faces.application.FacesMessage.SEVERITY_ERROR, 
                    "message.required.masterMaintenanceJob.uploadHowToFile"); 
                    //showOverlay = true;
               }
               else {
                    Integer extPos;
                    extPos = fileName.lastIndexOf(".");
                    String startName = fileName.substring(0, extPos);
                    String fileType = fileName.substring(extPos);
                    log.info("before validating fileType Type: " + fileType);
                    /*
                     * if ((fileType.equalsIgnoreCase(".jpg")) ||
                     * (fileType.equalsIgnoreCase(".png")) || (fileType.equals(".bmp")) ||
                     * (fileType.equals(".jpeg"))) {
                     */
                    log.info("After validating fileType");
                    StringBuffer dirName = new StringBuffer("");
                    SeamResourceBundle sRB = new SeamResourceBundle();
                    // getting path from resource bundle
                    dirName.append(sRB.getString("uploaded_files"));
                    // dirName.append("masterJobFile");
                    dirName.append(startName);
                    dirName.append(masterJob.getImasterJobId());
                    dirName.append(fileType);
                    File saveTo = new File(dirName.toString());

                    log.info("before writing");
                    log.info("File Data : " + fileData);
                    // Writing file
                    FileOutputStream writer = new FileOutputStream(saveTo);
                    writer.write(fileData);
                    // new file name
                    // fileName = "companyLogo" + masterJob.getImasterJobId() + fileType;
                    // setting companyLogo
                    masterJob.setStrHowToLocation(fileName);
                    log.info("#########added file name : " + masterJob.getStrHowToLocation());

                    // peristing company logo
                    entityManager.merge(masterJob);
                    facesMessages.addFromResourceBundle(javax.faces.application.FacesMessage.SEVERITY_INFO, 
                    "message.add.masterJob.uploadHowToFile.successful");
                    
                    showOverlay = false;
                    /*
                     * } else { facesMessages
                     * .addFromResourceBundle("message.companyLogo.wrong.extention");
                     * log.info("extention validation failed"); }
                     */
               }
          }
          catch (Exception e) {
               log.info("Exception===" + e.getMessage());
               ctx.setRollbackOnly();

          }
     }

public void closeLayer() {
          log.info("Entering closeLayer() method");
          showOverlay = false;
     }

Regards,

Ambrish