inserting values into mysql by dynamically using jsp sql tags

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JSP

hi frnds am strucking and i cant geting for inserting values into mysql by dynamically,so if pls help me if anybody..as possible early.thanks..

code is:

<%
 String companyName=request.getParameter("cname");
 String companyAddress=request.getParameter("caddress");
 String city=request.getParameter("city");
 String country=request.getParameter("country");
 String zip=request.getParameter("zip");
 %>
 <sql:setDataSource var="snapshot" driver="com.mysql.jdbc.Driver"
    url="jdbc:mysql://localhost/dmd"
    user="root"  password="root"/>

    <sql:update dataSource="${snapshot }" var="result">
    insert into dmd.company(companyName,companyAddress,city,country,zip) values('?','?','?','?','?');

    </sql:update>