Ruby on Rails

hi all,
   i am getting an error 'undefined method 'current' for 852:Fixnum', the error coming for following line

<%if @expert_pagination.current.previous%>
     <a  href="#" class="darkgray1" onclick="paginate_exp(<%=@expert_pagination.current.previous.number%>,escape('<%=@search_name%>'));">
     <img   border="0"  src="/images/left_arrow.gif"   align="absmiddle"></a>
<%else%>
<%end%>


can anyone know why it is coming ?
i am using Ruby 1.8.6,rails :2.3.11 and gem 1.6.2
--
Sachin

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