实例变量和JS.ERB

Here is the code from my controller:

def dvbd
    @dimvers = 'Hello'

  respond_to do |format|
    format.js
  end
end

Here is what is in dvbd.js.erb:

$("#dave").html("<h2><%= @dimvers %></h2>");

I expect the code to put the value of @dimvers between h2 tags in the Dave div. Thus far, only the h2 tags get populated. So, for some reason <%= @dimvers %> isn't being accessed or read, but I don't know how.