Unable to read context keys in delegates.rb

[arthytrip]

Hello everybody,
I need to use delegates.rb to be able to apply different overlays based on the characteristics of the url used (eg. different URL domain means different overlay to use).
But I have a trivial problem: I can't read any of the interesting context keys when using Mirador: identifier, local_uri, request_uri.
To be precise:

1. I use Cantaloupe 5.0.5 through Mirador 3
2. The keys of my interest are valued only if I invoke Cantaloupe directly and not via Mirador.
3. The only key that works both directly and via Mirador is client_ip (in my case it is of no use).

For example, this produces the correct key value of 'local_uri' only when calling Cantaloupe directly without using Mirador.

   def overlay(options = {})
    {
#      'string' => 'Context value "request_headers": ' + context['request_headers'].to_s,
      'string' => context['request_uri'],
#      'string' => 'Copyright ABC',
      'position' => 'center',
      'inset' => 5,
      'font' => 'Helvetica',
      'font_size' => 20,
      'font_min_size' => 18,
      'font_weight' => 1.0,
      'color' => 'rgba(128, 128, 128, 100)',
      'background_color' => 'rgba(0, 0, 0, 10)',
      'glyph_spacing' => 0,
      'stroke_color' => 'rgba(128, 128, 128, 100)',
      'stroke_width' => 1,
      'word_wrap' => false
    }
  end

Has anyone had similar experiences and any suggestions in this regard?
Thanks in advance for any response.

Arthy

[arthytrip]

Forget it.
I solved the problem which was simply due to the excessive length of the text strings never displaying on too small images used as an example.