translation of product image Unique file name and Displayed image subtitle

[tripnotic]

Hello,

I'm using Joomla 2.5.7 and VirtueMart v. 2.0.10
I'm trying to enforce translation of product image Unique file name and Displayed image subtitle. My multilingual website is supposed to provide product information in 4 languages: English, Polish, German and Russian.
Both mentioned fields are displayed on product details page.
- Unique file name consists of two parts : word "Model" and model number (for example TT6021)
- Displayed image subtitle consist of two part as well: word "Size" and model dimensions
What I'm trying to achieve is to translate words "Model" and "Size" for specific languages.

What I did so far:
- added entries directly in languages ini files (ie. en-GB.ini)
- added entries in language overide files using Joomla control panel (en-GB.override.ini)
- added entries in virtuemart language files (ie. en-GB.com_virtuemart.ini, en-GB.mod_virtuemart_product.ini)

Unfortunately no luck yet.

Any help would be appreciated.

Maciek