translate strings from format_plural How to translate the output of format_plural which returns a new translatable string every time the count increased. 

I put the translation with @count but it returns an array like @count[NUMBER]
the NUMBER increased and for every NUMBER we have a string that need translation.

The translation work if I put @count[NUMBER] and didn't work for NUMBER-1 nor NUMBER+1

How to translate all strings with one translation?

The code comes from download_count module

And here is the piece of code

if (isset($file-&gt;downloads) &amp;&amp; $file-&gt;downloads &gt; 0) {
$output .=     format_plural($file-&gt;downloads, 'Downloaded 1 time',     'Downloaded @count times');


}

Finally I need to translate plural strings form the translation interface drupal provides and fix the raised number of strings

I have .po files and had changed the plural-forms as that comment then import the file but nothing changed so I need help to fix it.

Thanks in advance
Thanks all 

I found the solution as that comment form-plural in po

Edited on of the po files after exporting the last state to keep translation.

Import the file using drush (uploading from the interface always fail)

Installed drush_lang module 

Apply that patch langimp relative path in /home/$_USER/.drush/drush_language

Clear cache for drupal and drush (drush cache-clear drush) 

use the commands that module provides and every thing will be fine