这有一段代码，我想把a,b,c相加得到结果存入数据库但得到的是几个数的排列不知怎样改，请大家出主意？

<%
dim rs_t
dim sql_t
dim uID,pwd,cpwd,question,answer,rname,sex,email,year,month,day,url,oicq
a=Request.form("a")
b=Request.form("b")
c=Request.form("c")
sum=Request.form("sum")


set rs_t=Server.CreateObject("adodb.recordset")
sql_t ="select uID from bb where uID='"&uID&"'"
rs_t.open sql_t,conn,1,1

dim rs,sql

set rs=Server.CreateObject("Adodb.Recordset")
sql="select * from bb where (id is null)"
rs.open sql,conn,1,3
rs.addnew
rs("a")=a
rs("b")=b
rs("c")=c
rs("sum")=a+b+c
rs("ip")=request.ServerVariables("REMOTE_ADDR")
rs.update

rs_t.close
set rs_t=nothing
rs.close
set rs=nothing
conn.close
set conn=nothing

response.redirect"success.htm"
%>

用Request得来的数据全是String

谢大家了