Redmine

When having a custom field you can only build up the url with this custom field value.
I need to build up a URL with custom field A and custom field B.

It would be really great if you can set up a URL like this:
http://test.com/?id=%value%&id2=%cf_11%

# Returns an URL generated with the custom field URL pattern
      # and variables substitution:
      # %value% => the custom field value
      # %id% => id of the customized object
      # %project_id% => id of the project of the customized object if defined
      # %project_identifier% => identifier of the project of the customized object if defined
      # %m1%, %m2%... => capture groups matches of the custom field regexp if defined
      def url_from_pattern(custom_field, value, customized)