How to write plugins replace temp

[Easy5s.net]

i have add plugin

PHP Code:

$templater = vB_Template::create("custom_forumhome_forumbit");
                $templater->register('childforumbits', $childforumbits);
                $templater->register('collapseimg_forumid', $collapseimg_forumid);
                $templater->register('collapseobj_forumid', $collapseobj_forumid);
                $templater->register('forum', $forum);
                $templater->register('forumid', $forumid);
                $templater->register('parent_is_category', $parent_is_category);
                
            $forumbits .= $templater->render(); 


hook work good but show dup temp