Hello there!

I have been tackling the same issue several months ago. By that time, I failed to "make it work" directly from perl, and resorted to writing a thin wrapper over WinSCP. It is long enough in the past so that I am no longer able to recollect why exactly I did it like this, sorry.

Now, I am not claiming at all that this is the best approach, but it worked in my case.

The code itself is probably too long to be posted here, and it is definitely not generic enough to be put to CPAN, but if you want to take a look at it just to have more options, give me a holer, and I will send it to you.

https://winscp.net/eng/docs/portable

https://winscp.net/eng/docs/scripting

UPDATE: added "not" in the sentence stating the code is not generic enough to be pushed to CPAN.