How to filter on primefaces? - jsf

Question

I'm using a modal window to select a value. After i make a selection and open the modal window again. I want the modal list be filtered on the selectedValue.
It goes back to the front page.
and if open modal again and select 'ABC', it should look like this:
this is look up and which list should be put in modal xhtml:
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:pe="http://primefaces.org/ui/extensions">
<p:panel id="dialog-content">
<h:form id="accountLookUpModal" style="width: 777px">
 
<p:panelGrid id="Info" columns="2" columnClasses="labelColumn,fieldColumn">
<!-- TYPE -->
<h:outputLabel id="AccountType" for="accountType" value="#{message['field.type']}" />
<p:selectOneMenu id="accountType" rendered="#{not empty account.criteria}" value="#{account.criteria.accountType}" converter="#{enumerationConverter}" disabled="#{account.disableLookUp}">
<p:ajax event="change" listener="#{account.filterOnType(true)}" update="#form, :dataTableForm"/>
<f:selectItems itemLabelEscaped="true" value="#{enumerationBean.getaccountTypeList()}" var="c" itemLabel="#{message[c.bundleKey]}" itemValue="#{c}"/>
</p:selectOneMenu>
</p:panelGrid>
</h:form>
<h:form id="dataTableForm" prependId="false" style="width:777px;">
<!-- INCLUDE Account Table -->
<ui:include src="/includes/accountLookUp.xhtml">
<ui:param name="PANEL_ID" value="accountActionPanel" />
<ui:param name="DT_ID" value="accountTable" />
<ui:param name="DT_DATA" value="#{account.accountTableLookUp}" />
<ui:param name="CR_BEAN" value="#{accountBean}" />
</ui:include>
</h:form>
</p:panel>
</ui:composition>
This is the xhtml used to select the update the list:
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:c="http://xmlns.jcp.org/jsp/jstl/core"
xmlns:p="http://primefaces.org/ui">
<p:dataTable id="#{DT_ID}" var="acc" emptyMessage="" value="#{DT_DATA.values}" rowIndexVar="index"
paginator="true" selection="#{DT_DATA.selectedValues}" rows="8" paginatorPosition="top"
paginatorTemplate="{FirstPageLink} {PreviousPageLink} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
editable="false" lazy="true" sortBy="#{acc.name}" sortOrder="ascending"
liveResize="true" filterDelay="100">
<p:ajax event="filter" listener="#{DT_DATA.onFilter}" />
<p:ajax event="rowToggle" listener="#{account.expandLookUp(acc)}" immediate="true"/>
<p:column styleClass="ui-column-rowtoggler" exportable="false">
<p:rowToggler id="cdtlu#{DT_ID}RT"/>
</p:column>
<!-- filterBy="#{acc.name}" -->
<p:column id="accountName" sortBy="#{acc.name}" filterBy="#{acc.name}" >
<f:facet name="header">
<h:outputText id="cu#{DT_ID}accountName" value="#{message['field.name']}" />
</f:facet>
<h:outputText id="cu#{DT_ID}accountName" value="#{acc.name}"/>
</p:column>
<!-- filterBy="#{acc.city}" -->
<p:column id="accountCity" sortBy="#{acc.city}" filterBy="#{acc.city}" >
<f:facet name="header">
<h:outputText id="cu#{DT_ID}accountCity" value="#{message['field.city']}" />
</f:facet>
<h:outputText id="cu#{DT_ID}accountCity" value="#{acc.city}" />
</p:column>
<!-- filterBy="#{acc.countryCode}" -->
<p:column id="accountCountry" sortBy="#{acc.countryCode}" filterOptions="#{enumerationBean.accountList}" filterBy="countryCode" >
<f:facet name="header">
<h:outputText id="cu#{DT_ID}CountryCode" value="#{message['field.countryCode']}" />
</f:facet>
<h:outputText id="cu#{DT_ID}TCountryCode" value="#{message[acc.countryCode.bundleKey]}" />
</p:column>
<p:column id="sel" styleClass="ui-column-rowtoggler">
<f:facet name="header">
<h:outputText id="cu#{DT_ID}Sel" value="#{message['common.sel']}" />
</f:facet>
<p:commandButton action="save-dialog" id="cu#{DT_ID}BtnSel"
actionListener="#{companySearchBean.updateCompanyOwner(acc)}"
icon="ui-icon ui-icon-e-w" >
</p:commandButton>
</p:column>
</p:dataTable>
</ui:composition>
Now i would like to filter with 'name' so that it looks it last picture. I used filterValue but then filterBy doesn't work properly and it produces null. In the nutshell if I select 'ABC' and then open the modal again. it should only contain list contain name like 'ABC'.
I'm new to prime faces so any help would be appreciated. Also i apologize for terrible diagrams.