I have rich text  metabox.When I echo the out put it shows html tags.If I write `<h1>Hi</h1>` in editor metabox it ouput the same.My works so far

    	 <?php
         $valueeee2=  get_post_meta($_GET['post'], 'SMTH_METANAME_VALUE' , true ) ;
         wp_editor( htmlspecialchars_decode($valueeee2), 'mettaabox_ID_stylee', $settings =     array('textarea_name'=>'MyInputNAME',) );
	     ?>

To display 

    $content=get_post_meta($post->ID, 'SMTH_METANAME_VALUE', true);
    echo $content;