RJS & Variable Scopes

I'm new to RJS and am trying to figure out how @params are passed/
available with my hierarchy.

# views/test/person.rhtml
<%= link_to_remote('GO', {:url => "/test/show?name=walker&age=77"})%>
<div id='name'>frank</div><div id='age'>33</div>

# controllers/test_controller.rb
class TestController < ApplicationController
        def update_person
            render :update do |page|
              page.show_helper
            end
        end
end

# helpers/application_helper.rb
module ApplicationHelper
        def show_helper(params)
              page.replace_html 'name', :partial => 'name'
              page.replace_html 'age', :partial => 'age'
        end
end

# views/test/_age.rhtml
26

# views/test/_name.rhtml
Tony

Ideally, I would like the @params in views/test/person.rhtml to be
available in their respective partials as such:
<%= @params[:age] %>
and
<%= @params[:name] %>

Thanks in advance for any help you may be able to offer