Refresh picklist data on page refresh in jsf 1.2

Question

I have a picklist on my jsf page, My requirement is for data on left side to clear and go back to default state on page refresh. However, the jsf page retains state after refresh.

<h:panelGrid>
<rich:pickList sourceListWidth="200" targetListWidth="200" value="#{Bean.slctdVals}">
<f:selectItems value="#{Bean.allVals}" />
</rich:pickList>
</h:panelGrid>