Need to hide an Item at page load

Hi,
Can anyone help me to hide an item when the page is loaded. I want to display the Item when i click the GO button.
Thanks in Advance.
Edited by: [email protected] on Apr 15, 2009 10:25 PM

Hi Pratap,
processRequest is working correctly.
In processFormRequest
oambean.setRendered(true); is not working.
In the page i get developer mode exception Error.
Error - (This developer mode error is thrown instead of being registered due to the lack of the page context object.) The OA passivation framework coding standard has been violated. Web bean properties cannot be modified in the controller processFormData or processFormRequest method. Web bean properties should be modified in the processRequest method only. An attempt to modify a web bean has been made in the following call stack: java.lang.Throwable at oracle.apps.fnd.framework.OACommonUtils.getCallStack(OACommonUtils.java:785) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.setAttributeValue(OAWebBeanHelper.java:1707) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.setAttributeValue(OAWebBeanHelper.java:1725) at oracle.apps.fnd.framework.webui.OAWebBeanFormElementHelper.setAttributeValue(OAWebBeanFormElementHelper.java:1983) at oracle.apps.fnd.framework.webui.beans.message.OAMessageTextInputBean.setAttributeValue(OAMessageTextInputBean.java:287) at oracle.cabo.ui.BaseMutableUINode.setRendered(Unknown Source) at oracle.cabo.ui.beans.BaseWebBean.setRendered(Unknown Source) at oracle.apps.ak.search.webui.SearchCO.processFormRequest(SearchCO.java:54) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:734) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:352) at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processFormRequest(OAPageLayoutHelper.java:943) at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processFormRequest(OAPageLayoutBean.java:1546) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:929) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:895) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:751) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:352) at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processFormRequest(OAFormBean.java:373) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:929) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:895) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:751) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:352) at oracle.apps.fnd.framework.webui.beans.OABodyBean.processFormRequest(OABodyBean.java:340) at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(OAPageBean.java:2392) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1512) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:463) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:384) at OA.jspService(OA.jsp:40) at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:317) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:465) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:379) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:727) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:306) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:767) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:259) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:106) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:803) at java.lang.Thread.run(Thread.java:534)

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