I'm trying to do a redirect while setting the flash[:error] value. (Rails 3.0.10)

In my view I have

```
<p id="error"><%= flash[:error] %></p>
<p id="notice"><%= flash[:notice] %></p>

```

If I do a `redirect_to show_path, :notice => "ok"` it works fine, but if I do `redirect_to show_path, :error => "error"` it doesn't show up.

what could I be missing?