Added requested tag.

1. login to Admin Console
2. go to Configuration → Website → Regional section
3. create second language
4. go to Tools → Query Database section
5. run SQL like ALTER TABLE inp_PromoBlocks ADD l1_SecondImage VARCHAR(255) NOT NULL DEFAULT "", ADD l2_SecondImage VARCHAR(255) NOT NULL DEFAULT "" (replace inp_ with your table prefix)
6. add test code line $fields['l' . $lang_id . '_SecondImage'] = $a_image; to promo-block:OnAfterConfigRead event after "$fields['l' . $lang_id . '_Image'] = $a_image;" line
7. add test code <inp2:promo-block_ImageField/><br /><inp2:promo-block_ImageField name='SecondImage'/> to promo_blocks/promo_block_edit template
8. add test code line <inp2:m_RenderElement name="inp_edit_swf_upload" caption_render_as="multilang_field_caption_element" prefix="promo-block" field="l{$langId}_SecondImage" title="la_fld_SecondImage"/> to promo_blocks/promo_block_edit template after <inp2:m_RenderElement name="inp_edit_swf_upload" caption_render_as="multilang_field_caption_element" prefix="promo-block" field="l{$langId}_Image" title="la_fld_Image"/> line
9. go to Website & Content → Promo Blocks → Default Group section
10. add promo block with primary language images only
11. open just added promo block on edit
12. confirm that file names, displayed by test tags, are related to primary language
13. select another language in the top right corner of the promo block edit form
14. confirm that file names, displayed by test tags, are related to primary language
15. add images for secondary language and save
16. open just edited promo block on edit
17. confirm that file names, displayed by test tags, are related to currently selected language
18. select another language in the top right corner of the promo block edit form
19. confirm that form refreshes and file names, displayed by test tags, are related to just selected language