jsf 2 - h:commandLink in p:autocomplete not passing querystring parameters correctly -

i'm trying perform action through command link in autocomplete component (primefaces)

i have same structure in others parts of code, , works, don't understand why in case doesn't.

here code:

<h:panelgroup layout="block" rendered="#{secondarymodel['mainbean'] == null}" styleclass="selector-title">     <label>#{msgs['attendee.view.contact.search']}</label>     <p:autocomplete id="autocomplete-contact" value="#{secondarymodel['searchbean']}" completemethod="#{autocompleteaction.completecontacts}"          var="contact" itemvalue="#{contact}" itemlabel="#{contact.fullname}"         converter="#{secondarymodel['autocompletebeanconverter']}"         minquerylength="3" maxresults="20" styleclass="autocomplete" widgetvar="autocompletecontactwidget"         onfocus="triggerautocomplete(autocompletecontactwidget, this.value)" onblur="blurautocomplete(autocompletecontactwidget)">         <f:attribute name="excluderelatedcontacts" value="#{false}" />         <p:column>             #{contact.fullname}             <h:commandlink action="loadcontact" styleclass="hide" >                 <f:param name="param" value="#{paramencryptionhelper.encryptparameters('contacttoassignid', contact.contactid)}" />                 <f:ajax execute="@form" />             </h:commandlink>         </p:column>     </p:autocomplete> </h:panelgroup> 

this webflow:

<transition on="loadcontact">         <evaluate expression="contactaction.loadcontact(secondarymodel, requestparameters.contacttoassignid, messagecontext)" />          <render fragments="modal-panels, history, notification" />     </transition> 

then pass contact component, null!

i debugged chrome see if param i'm trying pass webflow triggered, , is. seems action not performed, in fact if try debug java code doesn't go method.

the logs:

    severe: servlet.service() servlet [spring mvc dispatcher servlet] in context path [/uncdb] threw exception [request processing failed; nested exception org.springframework.webflow.execution.flowexecutionexception: exception thrown in state 'contacts' of flow 'int/contact'] root cause javax.el.propertynotfoundexception: /web-inf/pages/int/contact/contact.xhtml @31,72 value="#{contact.lastname}": target unreachable, identifier 'contact' resolved null     @ com.sun.faces.facelets.el.tagvalueexpression.gettype(tagvalueexpression.java:100)     @ com.sun.faces.renderkit.html_basic.htmlbasicinputrenderer.getconvertedvalue(htmlbasicinputrenderer.java:95)     @ javax.faces.component.uiinput.getconvertedvalue(uiinput.java:1034)     @ javax.faces.component.uiinput.validate(uiinput.java:964)     @ javax.faces.component.uiinput.executevalidate(uiinput.java:1237)     @ javax.faces.component.uiinput.processvalidators(uiinput.java:702)     @ javax.faces.component.uicomponentbase.processvalidators(uicomponentbase.java:1216)     @ javax.faces.component.uicomponentbase.processvalidators(uicomponentbase.java:1216)     @ javax.faces.component.uicomponentbase.processvalidators(uicomponentbase.java:1216)     @ javax.faces.component.uiform.processvalidators(uiform.java:253)     @ com.sun.faces.context.partialviewcontextimpl$phaseawarevisitcallback.visit(partialviewcontextimpl.java:506)     @ com.sun.faces.component.visit.partialvisitcontext.invokevisitcallback(partialvisitcontext.java:183)     @ javax.faces.component.uicomponent.visittree(uicomponent.java:1652)     @ javax.faces.component.uiform.visittree(uiform.java:362)     @ javax.faces.component.uicomponent.visittree(uicomponent.java:1663)     @ javax.faces.component.uicomponent.visittree(uicomponent.java:1663)     @ com.sun.faces.context.partialviewcontextimpl.processcomponents(partialviewcontextimpl.java:378)     @ com.sun.faces.context.partialviewcontextimpl.processpartial(partialviewcontextimpl.java:253)     @ org.primefaces.context.primepartialviewcontext.processpartial(primepartialviewcontext.java:57)     @ javax.faces.context.partialviewcontextwrapper.processpartial(partialviewcontextwrapper.java:183)     @ javax.faces.component.uiviewroot.processvalidators(uiviewroot.java:1162)     @ org.springframework.faces.webflow.flowlifecycle.invokephase(flowlifecycle.java:121)     @ org.springframework.faces.webflow.flowlifecycle.execute(flowlifecycle.java:70)     @ org.springframework.faces.webflow.jsfview.processuserevent(jsfview.java:120)     @ org.springframework.webflow.engine.viewstate.handleevent(viewstate.java:226)     @ org.springframework.webflow.engine.viewstate.resume(viewstate.java:196)     @ org.springframework.webflow.engine.flow.resume(flow.java:545)     @ org.springframework.webflow.engine.impl.flowexecutionimpl.resume(flowexecutionimpl.java:258)     @ org.springframework.webflow.executor.flowexecutorimpl.resumeexecution(flowexecutorimpl.java:169)     @ org.springframework.webflow.mvc.servlet.flowhandleradapter.handle(flowhandleradapter.java:183)     @ org.springframework.faces.webflow.jsfflowhandleradapter.handle(jsfflowhandleradapter.java:48)     @ org.springframework.web.servlet.dispatcherservlet.dodispatch(dispatcherservlet.java:923)     @ org.springframework.web.servlet.dispatcherservlet.doservice(dispatcherservlet.java:852)     @ org.springframework.web.servlet.frameworkservlet.processrequest(frameworkservlet.java:882)     @ org.springframework.web.servlet.frameworkservlet.dopost(frameworkservlet.java:789)     @ javax.servlet.http.httpservlet.service(httpservlet.java:646)     @ javax.servlet.http.httpservlet.service(httpservlet.java:727)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:303)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ com.jemmic.authperform.common.front.filter.paramencryptionfilter.dofilter(paramencryptionfilter.java:272)     @ org.springframework.web.filter.delegatingfilterproxy.invokedelegate(delegatingfilterproxy.java:346)     @ org.springframework.web.filter.delegatingfilterproxy.dofilter(delegatingfilterproxy.java:259)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:241)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.primefaces.webapp.filter.fileuploadfilter.dofilter(fileuploadfilter.java:98)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:241)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:311)     @ org.springframework.security.web.access.intercept.filtersecurityinterceptor.invoke(filtersecurityinterceptor.java:116)     @ org.springframework.security.web.access.intercept.filtersecurityinterceptor.dofilter(filtersecurityinterceptor.java:83)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.access.exceptiontranslationfilter.dofilter(exceptiontranslationfilter.java:113)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.session.sessionmanagementfilter.dofilter(sessionmanagementfilter.java:101)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.authentication.anonymousauthenticationfilter.dofilter(anonymousauthenticationfilter.java:113)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.servletapi.securitycontextholderawarerequestfilter.dofilter(securitycontextholderawarerequestfilter.java:54)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.savedrequest.requestcacheawarefilter.dofilter(requestcacheawarefilter.java:45)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.authentication.abstractauthenticationprocessingfilter.dofilter(abstractauthenticationprocessingfilter.java:182)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.authentication.logout.logoutfilter.dofilter(logoutfilter.java:105)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.context.securitycontextpersistencefilter.dofilter(securitycontextpersistencefilter.java:87)     @ org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter(filterchainproxy.java:323)     @ org.springframework.security.web.filterchainproxy.dofilter(filterchainproxy.java:173)     @ org.springframework.web.filter.delegatingfilterproxy.invokedelegate(delegatingfilterproxy.java:346)     @ org.springframework.web.filter.delegatingfilterproxy.dofilter(delegatingfilterproxy.java:259)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:241)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ com.jemmic.authperform.common.front.filter.ajaxsessiontimeoutfilter.dofilter(ajaxsessiontimeoutfilter.java:78)     @ org.springframework.web.filter.delegatingfilterproxy.invokedelegate(delegatingfilterproxy.java:346)     @ org.springframework.web.filter.delegatingfilterproxy.dofilter(delegatingfilterproxy.java:259)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:241)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.springframework.web.filter.characterencodingfilter.dofilterinternal(characterencodingfilter.java:88)     @ org.springframework.web.filter.onceperrequestfilter.dofilter(onceperrequestfilter.java:76)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:241)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:220)     @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:122)     @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:504)     @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:170)     @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:103)     @ org.apache.catalina.valves.accesslogvalve.invoke(accesslogvalve.java:950)     @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:116)     @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:421)     @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1074)     @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:611)     @ org.apache.tomcat.util.net.jioendpoint$socketprocessor.run(jioendpoint.java:314)     @ java.util.concurrent.threadpoolexecutor$worker.runtask(threadpoolexecutor.java:895)     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:918)     @ org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61)     @ java.lang.thread.run(thread.java:662) 

the problem here:

<f:ajax execute="@form" /> 

i changed <f:ajax />. because execute="@form" attribute causes parameters not included in query string.