function callbuild(){
			$this->buildLink(stripslashes($row_wall['text']));
			}
			 function buildLink($text){
if(preg_match('/@u(\w+)/', $text, $name_in_text)){
			$name = $name_in_text[1];
			$username_in_the_wall = $db->super_query("SELECT user_id,user_name, user_lastname FROM `".PREFIX."_users` WHERE user_id = '$name'");
			if($username_in_the_wall==""){
			$ss = stripslashes($text;
			$tpl->set('{text}',$ss);
			}
			else{
			$ss = preg_replace('/@(\w+)/','<a onclick="Page.Go(this.href); return false" href="u'.$username_in_the_wall['user_id'].'">'.$username_in_the_wall['user_name'].' '.$username_in_the_wall['user_lastname'].'</a>',$text);
			$tpl->set('{text}',$ss);
			
			}
			}
			elseif(preg_match('/$public(\w+)/', $text, $group)){
			$group_in_text = $group[1];
			$group_in_the_wall = $db->super_query("SELECT id,title FROM `".PREFIX."_communities` WHERE id = '$group_in_text'");
			if($group_in_the_wall==""){
			$ss = $text;
			$tpl->set('{text}',$ss);
			}
			else
			{
			$ss = preg_replace('/$public(\w+)/','<a onclick="Page.Go(this.href); return false" href="public'.$group_in_the_wall['id'].'">'.$group_in_the_wall['title'].'</a>',$text);
			$tpl->set('{text}',$ss);
			}
			}
			else{
			$ss = $text;
			$tpl->set('{text}',$ss);
			}
			}

Не могу вызвать функцию buildLink внутри класса, ругается вот так вот:
Call to a member function set() on a non-object