How to access array [arrFiles:protected] in Template file

[attachment=0:z5o6duci]example.gif[/attachment:z5o6duci]
How do I access above array information in my iso_list_default template? more precisely I want to access "[thumbnail_size]" from above.

With newer IsotopeGallery.php or class IsotopeGallery, which is here
https://github.com/isotope/core/commit/ ... ffd0a14efd
you can do like this

Code:

---

$this->images->images[0]['thumbnail_size']

---

Thank Andreas Schempp