'Param tag giving null value

param tag giving null value when i used

System.out.println("Before"+request.getParameter("imeino")); 
<% session.setAttribute("imeino1", request.getParameter("imeino1"));
    System.out.print("BBBBB^^@@"+session.getAttribute("imeino"));
%>
<div style="margin-left: 50px; margin-bottom: 10px;">
</div>
<div class="grid" align="center" style="margin-top: 30px">
<ws:url id="remoteurl" action='userimageGrid' escapeAmp="false"> 
    <ws:param name="imeino" value="66666666666"></ws:param>
</ws:url> 


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