请教:关于displaytag的问题
<display:table name="sessionScope.clients" style="{width:550}" class="mars" pagesize="20" export="true" >
<display:column property="CR_ID" title="客户编号" href="../ShowClientRecord.do?method=show" paramId="cr_id" paramProperty="CR_ID" />
<display:column property="CR_CNNAME" title="客户中文名称" href="../ShowClientRecord.do?method=show" paramId="cr_id" paramProperty="CR_ID"/>
<display:column property="CR_ENNAME" title="客户英文名称" />
<display:column property="CR_TEL" title="联系电话" />
<display:column property="CR_EMAIL" title="电邮" />
<display:column title="操作" >
<html:link href="../EditClientRecord.do?method=edit" paramId="cr_id" paramProperty="CR_ID">修改</html:link>
<html:link href="../EditClientRecord.do?method=delete" paramId="cr_id" paramProperty="CR_ID">删除</html:link>
</display:column>
</display:table>
在"修改"列中为何不能传递cr_id参数值?