Choose the file in the Window "Open"

Good day!
Doesn’t anybody knows, how I can choose (click) the item (file) in the Open-window (structure like in the Finder) of my application if “Accessibility Inspector” doesn’t shows “actions” for this item ()?

“Accessibility Inspector” shows:
<AXApplication: “HpglDemo”>
<AXWindow: “Open”>

Empty :frowning:

Thanks for attention.

Problem was resolved.
You may change a view of the items in the window to Table.
Then work with rows using “select” and keystroke return.
It’s not very universal but worked.