request.getAttribute() gives only null

I'm using two combo boxes, onee and twoo that gets values from database and selected value is to be stored in database. code for setAttribute:

        <% String s1= new String(); %>
    <select id="onee" name="onee" style="margin-left:400px" required="">
            <%  while(rs.next()){ %>
            <option id="<%=rs.getString(1)%>" name="<%=rs.getString(1)%>" value="<%=rs.getString(1)%>"><%=rs.getString(1)%></option>
            <% } %>
            </select>
            <% s1=request.getParameter("onee");%>
            <% request.setAttribute("s1",s1);%>

<%String s2=new String(); %>
<select name="twoo" id="twoo" style="margin-left:200px" required="">
        <%  while(rss.next()){ %>
        <option id="<%=rss.getString(1)%>" name="<%=rss.getString(1)%>" value="<%=rss.getString(1)%>"><%=rss.getString(1)%></option>
        <% } %>
        </select>
        <% s2=request.getParameter("twoo");%>
        <% request.setAttribute("s2",s2);%>

code for getAttribute:

String oone=(String)request.getAttribute("s1");
    String ttwo=(String)request.getAttribute("s2");

The query:

String sql="insert into choices(ID,One,Two) values ('" + oone + "','" + ttwo + "')";

It only stores null and null