Hello Valera,
Sorry for the misunderstanding. There is already a rules for what you want. The name is
plgaup_easyblog_read_blog_author
This is the rule that assign points to the author is the post is read. The codes are here
JOOMLA/administrator/components/com_easyblog/tables/blog.php
at line 240 to 245
// Add points for author
if( EasyBlogHelper::isAUPEnabled() )
{
$aupid = AlphaUserPointsHelper::getAnyUserReferreID( $this->created_by );
AlphaUserPointsHelper::newpoints( 'plgaup_easyblog_read_blog_author', $aupid, '', JText::sprintf('COM_EASYBLOG_AUP_READ_BLOG_AUTHOR', $this->title) );
}
Hope this helps.
Thanks!