Problem is simple: coordinates are not in pixels but in bars/price format, so we can’t anchor objects for a computer screener, but only for a price chart!
While it would be possible to know what is the last bar of history, it is not possible to know what is the last bar displayed on your own screen.
I agree that it is not the way it should be because it makes simple things harder or impossible to be made (such as anchor objects like the way you want)…
