Highslide support for computed field

Hi,

Thanks for such a wonderful module!

I think this is the only lightbox module which allows cck field as caption? Everything works great, but i was wondering if this module can support computed field as well? I have created a computed field, which computes value of 4 fields and was thinking this field as caption field. But when I go to my formatter, it displays all fields, except this computed field. Is there a easy way to include computed fields in this list of ckk fields for captions?

Another question. Which variable is eing used to display caption? I tried using $caption, $caption_content, $formatter['caption'] and $formatter['caption_field'], but none of them worked.

Thanks in advance.