I’d like to specifiy values within " and not ’ eg, terapia=“Aghi personali”.
Only by code modification
connector/dataprocessor.php
function to_xml(){
$str="<action type='{$this->status}' sid='{$this->id}' tid='{$this->nid}' ";
foreach ($this->attrs as $k => $v) {
$str.=$k."='".$v."' ";
For the second question:
Check
docs.dhtmlx.com/doku.php?id=dhtm … s_as_links
you can look in sources/ext/ext_active_links.js - to get more details.
Basically it uses the same approach - stores the date detail in the link tag, and use setCurrentView from onclick