asp.net - jquery greybox pass query string -

 <a href="../../addlesson.aspx?id=<%# request.querystring["id"] %>" rel="gb_page_center[340, 380]"><img src="../../images/add_lesson_icon.png" width="17" height="18" alt="add lesson" /></a>  

here code open greybox popup clicking on anchor tag , want send data through querystring. have done above. not working. help

instead of this:

<%# request.querystring["id"] %> 

try instead:

<%= request.querystring["id"] %>