Unable to translate "You can only take this quiz @allowed. You have taken it @really."

Hi,

The format_plural already makes use of the t(), that being the case I could see this text being passed to a drupal_set_message with another t() wrapper. With this it will be quite tedious to translate the text "You can only take this quiz @allowed. You have taken it @really.".

Please do make changes so that the t() and format_plural is used properly to avail proper translation.

Thank you.