request.querystring

im passing value by request.querystring i had try <% dim a as integer dim
b as integer dim total as integer a = Cint (request.QueryString('price')) b
= Cint (request.QueryString('commision')) total = a + b %> and show the
total with <%=total%> and it shows compilation error Compiler Error Message:
BC30451: Name 'total' is not declared. can any1 guide me? thank you very much