QUESTION Plugin on multilanguage sites

[smdp-1971]

I'm creating a small plugin that will only be displayed on the selected page, I'm using this code which works fine:

PHP Code:

if (get_filename_id()=='edit' && $_GET['id']=='selectpage') {
    add_action('edit-extras','function_to_call',array());
}

///
edit.php?id=selectpage -> plugin content is showing 


How to solve the problem if the page is multilingual and the selected page has the same slug - I tried this:

PHP Code:

global $language;

if ($language == 'en') {
    $select_page = 'selectpage_'.$language.'';
} else {
    $select_page = 'selectpage';
}

if (get_filename_id()=='edit' && $_GET['id']==''.$select_page.'') {
    add_action('edit-extras','function_to_call',array());
}


///
edit.php?id=selectpage -> plugin content is showing
///
edit.php?id=selectpage_en - > plugin content is not showing 


So the plugin is displayed only on the page that does not have the _$language;

I18N Base plugin installed.

Thanks for all suggestions!