Issue with Richfaces Datatable filter search

Question

Here is the scenario i have a Richfaces datatable where i have added filter concept like below

<rich:column width="250px" sortBy="#{test.name}" filterExpression="#{fn:equalsIgnoreCase(test.name, filterValue)}"
                    filterValue="#{InventoryFilter.name}">

and all bean initialized by application-context.xml and scope of the bean request

EDIT:-

 <bean id="InventoryFilter" class="com.alu.ipprd.bsm.soa.portal.filter.InventoryFilter" scope="request" />

Now when i am switching tab ,let us suppose from Tab A to Tab B old search value still coming while each tab i have defined switchType="server"

So it mean when i am swtiching tabs a request is going to server so my application should initialized InventoryFilter.java class.

But it not working please someone guide me what i am doing wrong?

EDIT:- Tab Code

<rich:tabPanel id="tabPanel1" switchType="server"
                        selectedTab="#{panelMenuBean.selectedTabName}"
                        value="#{panelMenuBean.selectedTabName}"
                        style="max-width:500px; height:300px;"
                        itemChangeListener="#{inventoriesBean.getClearBean}">


                        <rich:tab id="customerTab"
                            name="#{bsmPortalLabel['tab.inventory.customer']}" rendered="#{loginBean.isInventoriesCustomerTabEnable()}">
</rich:tab>

//SOME Other tabs here

</rich:tabPanel>